Home / 20,531,915.71-28,333,189.18-11,239,254.99

Finding the Fourth Proportional to 20,531,915.71, 28,333,189.18 and 11,239,254.99

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Solution

The fourth proportional to 20,531,915.71, 28,333,189.18 and 11,239,254.99 is: 15,509,704.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531,915.71 : 28,333,189.18 = 11,239,254.99 : x
  2. Step 2: Convert to fraction form
    20,531,915.71/28,333,189.18 = 11,239,254.99/x
  3. Step 3: Cross multiply
    20,531,915.71x = 28,333,189.18 × 11,239,254.99
  4. Step 4: Simplify right side
    20,531,915.71x = 318,443,937,873,929
  5. Step 5: Solve for x
    x = 318,443,937,873,929/20,531,915.71
  6. Step 6: Final answer
    x = 15,509,704.13

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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.