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Finding the Fourth Proportional to 25,365.80, 38,048.70 and 21,487.40

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Solution

The fourth proportional to 25,365.80, 38,048.70 and 21,487.40 is: 32,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,365.80 : 38,048.70 = 21,487.40 : x
  2. Step 2: Convert to fraction form
    25,365.80/38,048.70 = 21,487.40/x
  3. Step 3: Cross multiply
    25,365.80x = 38,048.70 × 21,487.40
  4. Step 4: Simplify right side
    25,365.80x = 817,567,636.38
  5. Step 5: Solve for x
    x = 817,567,636.38/25,365.80
  6. Step 6: Final answer
    x = 32,231.10

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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.