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Finding the Fourth Proportional to 15,841.80, 23,733.90 and 12,904.20

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Solution

The fourth proportional to 15,841.80, 23,733.90 and 12,904.20 is: 19,332.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,841.80 : 23,733.90 = 12,904.20 : x
  2. Step 2: Convert to fraction form
    15,841.80/23,733.90 = 12,904.20/x
  3. Step 3: Cross multiply
    15,841.80x = 23,733.90 × 12,904.20
  4. Step 4: Simplify right side
    15,841.80x = 306,266,992.38
  5. Step 5: Solve for x
    x = 306,266,992.38/15,841.80
  6. Step 6: Final answer
    x = 19,332.84

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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.