Home / 34,123.70-47,119.79-21,398.29

Finding the Fourth Proportional to 34,123.70, 47,119.79 and 21,398.29

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Solution

The fourth proportional to 34,123.70, 47,119.79 and 21,398.29 is: 29,547.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,123.70 : 47,119.79 = 21,398.29 : x
  2. Step 2: Convert to fraction form
    34,123.70/47,119.79 = 21,398.29/x
  3. Step 3: Cross multiply
    34,123.70x = 47,119.79 × 21,398.29
  4. Step 4: Simplify right side
    34,123.70x = 1,008,282,931.16
  5. Step 5: Solve for x
    x = 1,008,282,931.16/34,123.70
  6. Step 6: Final answer
    x = 29,547.88

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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.