Home / 21,123.99-31,675.05-11,260.62

Finding the Fourth Proportional to 21,123.99, 31,675.05 and 11,260.62

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Solution

The fourth proportional to 21,123.99, 31,675.05 and 11,260.62 is: 16,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.99 : 31,675.05 = 11,260.62 : x
  2. Step 2: Convert to fraction form
    21,123.99/31,675.05 = 11,260.62/x
  3. Step 3: Cross multiply
    21,123.99x = 31,675.05 × 11,260.62
  4. Step 4: Simplify right side
    21,123.99x = 356,680,701.53
  5. Step 5: Solve for x
    x = 356,680,701.53/21,123.99
  6. Step 6: Final answer
    x = 16,885.10

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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.