Home / 31,129.74-42,965.85-19,034.45

Finding the Fourth Proportional to 31,129.74, 42,965.85 and 19,034.45

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Solution

The fourth proportional to 31,129.74, 42,965.85 and 19,034.45 is: 26,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.74 : 42,965.85 = 19,034.45 : x
  2. Step 2: Convert to fraction form
    31,129.74/42,965.85 = 19,034.45/x
  3. Step 3: Cross multiply
    31,129.74x = 42,965.85 × 19,034.45
  4. Step 4: Simplify right side
    31,129.74x = 817,831,108.70
  5. Step 5: Solve for x
    x = 817,831,108.70/31,129.74
  6. Step 6: Final answer
    x = 26,271.70

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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.