Home / 15,329.16-21,156.20-9,359.55

Finding the Fourth Proportional to 15,329.16, 21,156.20 and 9,359.55

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Solution

The fourth proportional to 15,329.16, 21,156.20 and 9,359.55 is: 12,917.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.16 : 21,156.20 = 9,359.55 : x
  2. Step 2: Convert to fraction form
    15,329.16/21,156.20 = 9,359.55/x
  3. Step 3: Cross multiply
    15,329.16x = 21,156.20 × 9,359.55
  4. Step 4: Simplify right side
    15,329.16x = 198,012,511.71
  5. Step 5: Solve for x
    x = 198,012,511.71/15,329.16
  6. Step 6: Final answer
    x = 12,917.38

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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.