Home / 21,715.15-29,925.95-17,403.34

Finding the Fourth Proportional to 21,715.15, 29,925.95 and 17,403.34

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Solution

The fourth proportional to 21,715.15, 29,925.95 and 17,403.34 is: 23,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.15 : 29,925.95 = 17,403.34 : x
  2. Step 2: Convert to fraction form
    21,715.15/29,925.95 = 17,403.34/x
  3. Step 3: Cross multiply
    21,715.15x = 29,925.95 × 17,403.34
  4. Step 4: Simplify right side
    21,715.15x = 520,811,246.03
  5. Step 5: Solve for x
    x = 520,811,246.03/21,715.15
  6. Step 6: Final answer
    x = 23,983.78

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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.