Home / 42,964.32-64,448.16-13,384.80

Finding the Fourth Proportional to 42,964.32, 64,448.16 and 13,384.80

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Solution

The fourth proportional to 42,964.32, 64,448.16 and 13,384.80 is: 20,077.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,964.32 : 64,448.16 = 13,384.80 : x
  2. Step 2: Convert to fraction form
    42,964.32/64,448.16 = 13,384.80/x
  3. Step 3: Cross multiply
    42,964.32x = 64,448.16 × 13,384.80
  4. Step 4: Simplify right side
    42,964.32x = 862,625,731.97
  5. Step 5: Solve for x
    x = 862,625,731.97/42,964.32
  6. Step 6: Final answer
    x = 20,077.72

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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.