Home / 15,713.52-21,681.24-9,742.32

Finding the Fourth Proportional to 15,713.52, 21,681.24 and 9,742.32

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Solution

The fourth proportional to 15,713.52, 21,681.24 and 9,742.32 is: 13,442.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,713.52 : 21,681.24 = 9,742.32 : x
  2. Step 2: Convert to fraction form
    15,713.52/21,681.24 = 9,742.32/x
  3. Step 3: Cross multiply
    15,713.52x = 21,681.24 × 9,742.32
  4. Step 4: Simplify right side
    15,713.52x = 211,225,578.08
  5. Step 5: Solve for x
    x = 211,225,578.08/15,713.52
  6. Step 6: Final answer
    x = 13,442.28

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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.