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Finding the Fourth Proportional to 15,617.16, 21,559.50 and 10,607.88

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Solution

The fourth proportional to 15,617.16, 21,559.50 and 10,607.88 is: 14,644.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,617.16 : 21,559.50 = 10,607.88 : x
  2. Step 2: Convert to fraction form
    15,617.16/21,559.50 = 10,607.88/x
  3. Step 3: Cross multiply
    15,617.16x = 21,559.50 × 10,607.88
  4. Step 4: Simplify right side
    15,617.16x = 228,700,588.86
  5. Step 5: Solve for x
    x = 228,700,588.86/15,617.16
  6. Step 6: Final answer
    x = 14,644.19

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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.