Home / 31,143.06-42,976.08-17,712.42

Finding the Fourth Proportional to 31,143.06, 42,976.08 and 17,712.42

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Solution

The fourth proportional to 31,143.06, 42,976.08 and 17,712.42 is: 24,442.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,143.06 : 42,976.08 = 17,712.42 : x
  2. Step 2: Convert to fraction form
    31,143.06/42,976.08 = 17,712.42/x
  3. Step 3: Cross multiply
    31,143.06x = 42,976.08 × 17,712.42
  4. Step 4: Simplify right side
    31,143.06x = 761,210,378.91
  5. Step 5: Solve for x
    x = 761,210,378.91/31,143.06
  6. Step 6: Final answer
    x = 24,442.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.