Home / 27,729.95-38,267.31-15,154.70

Finding the Fourth Proportional to 27,729.95, 38,267.31 and 15,154.70

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Solution

The fourth proportional to 27,729.95, 38,267.31 and 15,154.70 is: 20,913.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,729.95 : 38,267.31 = 15,154.70 : x
  2. Step 2: Convert to fraction form
    27,729.95/38,267.31 = 15,154.70/x
  3. Step 3: Cross multiply
    27,729.95x = 38,267.31 × 15,154.70
  4. Step 4: Simplify right side
    27,729.95x = 579,929,411.52
  5. Step 5: Solve for x
    x = 579,929,411.52/27,729.95
  6. Step 6: Final answer
    x = 20,913.47

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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.