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Finding the Fourth Proportional to 25,657.81, 38,482.98 and 6,938.92

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Solution

The fourth proportional to 25,657.81, 38,482.98 and 6,938.92 is: 10,407.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,657.81 : 38,482.98 = 6,938.92 : x
  2. Step 2: Convert to fraction form
    25,657.81/38,482.98 = 6,938.92/x
  3. Step 3: Cross multiply
    25,657.81x = 38,482.98 × 6,938.92
  4. Step 4: Simplify right side
    25,657.81x = 267,030,319.58
  5. Step 5: Solve for x
    x = 267,030,319.58/25,657.81
  6. Step 6: Final answer
    x = 10,407.37

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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.