Home / 31,012.60-42,798.28-19,082.92

Finding the Fourth Proportional to 31,012.60, 42,798.28 and 19,082.92

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Solution

The fourth proportional to 31,012.60, 42,798.28 and 19,082.92 is: 26,334.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,012.60 : 42,798.28 = 19,082.92 : x
  2. Step 2: Convert to fraction form
    31,012.60/42,798.28 = 19,082.92/x
  3. Step 3: Cross multiply
    31,012.60x = 42,798.28 × 19,082.92
  4. Step 4: Simplify right side
    31,012.60x = 816,716,153.38
  5. Step 5: Solve for x
    x = 816,716,153.38/31,012.60
  6. Step 6: Final answer
    x = 26,334.98

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Double scale
Find fourth proportional to 31,013.60, 42,799.66 and 19,083.92
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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.