Home / 15,620.34-21,565.95-9,655.40

Finding the Fourth Proportional to 15,620.34, 21,565.95 and 9,655.40

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Solution

The fourth proportional to 15,620.34, 21,565.95 and 9,655.40 is: 13,330.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620.34 : 21,565.95 = 9,655.40 : x
  2. Step 2: Convert to fraction form
    15,620.34/21,565.95 = 9,655.40/x
  3. Step 3: Cross multiply
    15,620.34x = 21,565.95 × 9,655.40
  4. Step 4: Simplify right side
    15,620.34x = 208,227,891.34
  5. Step 5: Solve for x
    x = 208,227,891.34/15,620.34
  6. Step 6: Final answer
    x = 13,330.56

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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.