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Finding the Fourth Proportional to 17,641.80, 26,462.70 and 16,621.20

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Solution

The fourth proportional to 17,641.80, 26,462.70 and 16,621.20 is: 24,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,641.80 : 26,462.70 = 16,621.20 : x
  2. Step 2: Convert to fraction form
    17,641.80/26,462.70 = 16,621.20/x
  3. Step 3: Cross multiply
    17,641.80x = 26,462.70 × 16,621.20
  4. Step 4: Simplify right side
    17,641.80x = 439,841,829.24
  5. Step 5: Solve for x
    x = 439,841,829.24/17,641.80
  6. Step 6: Final answer
    x = 24,931.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.