Home / 15,530.31-21,433.29-9,565.47

Finding the Fourth Proportional to 15,530.31, 21,433.29 and 9,565.47

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Solution

The fourth proportional to 15,530.31, 21,433.29 and 9,565.47 is: 13,201.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.31 : 21,433.29 = 9,565.47 : x
  2. Step 2: Convert to fraction form
    15,530.31/21,433.29 = 9,565.47/x
  3. Step 3: Cross multiply
    15,530.31x = 21,433.29 × 9,565.47
  4. Step 4: Simplify right side
    15,530.31x = 205,019,492.50
  5. Step 5: Solve for x
    x = 205,019,492.50/15,530.31
  6. Step 6: Final answer
    x = 13,201.25

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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.