Home / 15,329.76-21,147.11-10,295.40

Finding the Fourth Proportional to 15,329.76, 21,147.11 and 10,295.40

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Solution

The fourth proportional to 15,329.76, 21,147.11 and 10,295.40 is: 14,202.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.76 : 21,147.11 = 10,295.40 : x
  2. Step 2: Convert to fraction form
    15,329.76/21,147.11 = 10,295.40/x
  3. Step 3: Cross multiply
    15,329.76x = 21,147.11 × 10,295.40
  4. Step 4: Simplify right side
    15,329.76x = 217,718,034.90
  5. Step 5: Solve for x
    x = 217,718,034.90/15,329.76
  6. Step 6: Final answer
    x = 14,202.32

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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.