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Finding the Fourth Proportional to 25,437.76, 38,155.08 and 7,905.04

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Solution

The fourth proportional to 25,437.76, 38,155.08 and 7,905.04 is: 11,857.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,437.76 : 38,155.08 = 7,905.04 : x
  2. Step 2: Convert to fraction form
    25,437.76/38,155.08 = 7,905.04/x
  3. Step 3: Cross multiply
    25,437.76x = 38,155.08 × 7,905.04
  4. Step 4: Simplify right side
    25,437.76x = 301,617,433.60
  5. Step 5: Solve for x
    x = 301,617,433.60/25,437.76
  6. Step 6: Final answer
    x = 11,857.08

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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.