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Finding the Fourth Proportional to 25,641.40, 38,412.90 and 19,769.08

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Solution

The fourth proportional to 25,641.40, 38,412.90 and 19,769.08 is: 29,615.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,641.40 : 38,412.90 = 19,769.08 : x
  2. Step 2: Convert to fraction form
    25,641.40/38,412.90 = 19,769.08/x
  3. Step 3: Cross multiply
    25,641.40x = 38,412.90 × 19,769.08
  4. Step 4: Simplify right side
    25,641.40x = 759,387,693.13
  5. Step 5: Solve for x
    x = 759,387,693.13/25,641.40
  6. Step 6: Final answer
    x = 29,615.69

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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.