Home / 15,438.13-21,296.79-9,763.32

Finding the Fourth Proportional to 15,438.13, 21,296.79 and 9,763.32

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Solution

The fourth proportional to 15,438.13, 21,296.79 and 9,763.32 is: 13,468.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.13 : 21,296.79 = 9,763.32 : x
  2. Step 2: Convert to fraction form
    15,438.13/21,296.79 = 9,763.32/x
  3. Step 3: Cross multiply
    15,438.13x = 21,296.79 × 9,763.32
  4. Step 4: Simplify right side
    15,438.13x = 207,927,375.74
  5. Step 5: Solve for x
    x = 207,927,375.74/15,438.13
  6. Step 6: Final answer
    x = 13,468.43

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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.