Home / 20,763.31-31,123.09-10,353.19

Finding the Fourth Proportional to 20,763.31, 31,123.09 and 10,353.19

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Solution

The fourth proportional to 20,763.31, 31,123.09 and 10,353.19 is: 15,518.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.31 : 31,123.09 = 10,353.19 : x
  2. Step 2: Convert to fraction form
    20,763.31/31,123.09 = 10,353.19/x
  3. Step 3: Cross multiply
    20,763.31x = 31,123.09 × 10,353.19
  4. Step 4: Simplify right side
    20,763.31x = 322,223,199.29
  5. Step 5: Solve for x
    x = 322,223,199.29/20,763.31
  6. Step 6: Final answer
    x = 15,518.88

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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.