Home / 15,729,071,385.61-21,711,291,325.41-12,519,868,083.76

Finding the Fourth Proportional to 15,729,071,385.61, 21,711,291,325.41 and 12,519,868,083.76

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Solution

The fourth proportional to 15,729,071,385.61, 21,711,291,325.41 and 12,519,868,083.76 is: 17,281,535,359.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729,071,385.61 : 21,711,291,325.41 = 12,519,868,083.76 : x
  2. Step 2: Convert to fraction form
    15,729,071,385.61/21,711,291,325.41 = 12,519,868,083.76/x
  3. Step 3: Cross multiply
    15,729,071,385.61x = 21,711,291,325.41 × 12,519,868,083.76
  4. Step 4: Simplify right side
    15,729,071,385.61x = 271,822,503,322,216,005,632
  5. Step 5: Solve for x
    x = 271,822,503,322,216,005,632/15,729,071,385.61
  6. Step 6: Final answer
    x = 17,281,535,359.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.