Home / 21,010,802.40-31,497,541.20-12,482,085.60

Finding the Fourth Proportional to 21,010,802.40, 31,497,541.20 and 12,482,085.60

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Solution

The fourth proportional to 21,010,802.40, 31,497,541.20 and 12,482,085.60 is: 18,712,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010,802.40 : 31,497,541.20 = 12,482,085.60 : x
  2. Step 2: Convert to fraction form
    21,010,802.40/31,497,541.20 = 12,482,085.60/x
  3. Step 3: Cross multiply
    21,010,802.40x = 31,497,541.20 × 12,482,085.60
  4. Step 4: Simplify right side
    21,010,802.40x = 393,155,005,447,926.69
  5. Step 5: Solve for x
    x = 393,155,005,447,926.69/21,010,802.40
  6. Step 6: Final answer
    x = 18,712,041.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.