Home / 31,439.80-47,159.70-10,663.30

Finding the Fourth Proportional to 31,439.80, 47,159.70 and 10,663.30

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Solution

The fourth proportional to 31,439.80, 47,159.70 and 10,663.30 is: 15,994.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439.80 : 47,159.70 = 10,663.30 : x
  2. Step 2: Convert to fraction form
    31,439.80/47,159.70 = 10,663.30/x
  3. Step 3: Cross multiply
    31,439.80x = 47,159.70 × 10,663.30
  4. Step 4: Simplify right side
    31,439.80x = 502,878,029.01
  5. Step 5: Solve for x
    x = 502,878,029.01/31,439.80
  6. Step 6: Final answer
    x = 15,994.95

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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.