Home / 14,082.30-21,123.45-12,697.20

Finding the Fourth Proportional to 14,082.30, 21,123.45 and 12,697.20

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Solution

The fourth proportional to 14,082.30, 21,123.45 and 12,697.20 is: 19,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,082.30 : 21,123.45 = 12,697.20 : x
  2. Step 2: Convert to fraction form
    14,082.30/21,123.45 = 12,697.20/x
  3. Step 3: Cross multiply
    14,082.30x = 21,123.45 × 12,697.20
  4. Step 4: Simplify right side
    14,082.30x = 268,208,669.34
  5. Step 5: Solve for x
    x = 268,208,669.34/14,082.30
  6. Step 6: Final answer
    x = 19,045.80

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Double scale
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Similar ratio
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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.