Home / 42,980.08-64,470.12-15,275.92

Finding the Fourth Proportional to 42,980.08, 64,470.12 and 15,275.92

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Solution

The fourth proportional to 42,980.08, 64,470.12 and 15,275.92 is: 22,913.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,980.08 : 64,470.12 = 15,275.92 : x
  2. Step 2: Convert to fraction form
    42,980.08/64,470.12 = 15,275.92/x
  3. Step 3: Cross multiply
    42,980.08x = 64,470.12 × 15,275.92
  4. Step 4: Simplify right side
    42,980.08x = 984,840,395.51
  5. Step 5: Solve for x
    x = 984,840,395.51/42,980.08
  6. Step 6: Final answer
    x = 22,913.88

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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.