Home / 21,427,276.32-29,565,041.04-12,728,381.76

Finding the Fourth Proportional to 21,427,276.32, 29,565,041.04 and 12,728,381.76

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Solution

The fourth proportional to 21,427,276.32, 29,565,041.04 and 12,728,381.76 is: 17,562,434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427,276.32 : 29,565,041.04 = 12,728,381.76 : x
  2. Step 2: Convert to fraction form
    21,427,276.32/29,565,041.04 = 12,728,381.76/x
  3. Step 3: Cross multiply
    21,427,276.32x = 29,565,041.04 × 12,728,381.76
  4. Step 4: Simplify right side
    21,427,276.32x = 376,315,129,107,187.44
  5. Step 5: Solve for x
    x = 376,315,129,107,187.44/21,427,276.32
  6. Step 6: Final answer
    x = 17,562,434.14

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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.