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Finding the Fourth Proportional to 15,661.80, 23,492.70 and 13,547.70

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Solution

The fourth proportional to 15,661.80, 23,492.70 and 13,547.70 is: 20,321.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661.80 : 23,492.70 = 13,547.70 : x
  2. Step 2: Convert to fraction form
    15,661.80/23,492.70 = 13,547.70/x
  3. Step 3: Cross multiply
    15,661.80x = 23,492.70 × 13,547.70
  4. Step 4: Simplify right side
    15,661.80x = 318,272,051.79
  5. Step 5: Solve for x
    x = 318,272,051.79/15,661.80
  6. Step 6: Final answer
    x = 20,321.55

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Similar ratio
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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.