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Finding the Fourth Proportional to 25,309.80, 37,978.32 and 10,528.92

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Solution

The fourth proportional to 25,309.80, 37,978.32 and 10,528.92 is: 15,799.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,309.80 : 37,978.32 = 10,528.92 : x
  2. Step 2: Convert to fraction form
    25,309.80/37,978.32 = 10,528.92/x
  3. Step 3: Cross multiply
    25,309.80x = 37,978.32 × 10,528.92
  4. Step 4: Simplify right side
    25,309.80x = 399,870,693.01
  5. Step 5: Solve for x
    x = 399,870,693.01/25,309.80
  6. Step 6: Final answer
    x = 15,799.05

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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.