Home / 14,189.78-19,581.90-7,902.16

Finding the Fourth Proportional to 14,189.78, 19,581.90 and 7,902.16

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Solution

The fourth proportional to 14,189.78, 19,581.90 and 7,902.16 is: 10,904.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,189.78 : 19,581.90 = 7,902.16 : x
  2. Step 2: Convert to fraction form
    14,189.78/19,581.90 = 7,902.16/x
  3. Step 3: Cross multiply
    14,189.78x = 19,581.90 × 7,902.16
  4. Step 4: Simplify right side
    14,189.78x = 154,739,306.90
  5. Step 5: Solve for x
    x = 154,739,306.90/14,189.78
  6. Step 6: Final answer
    x = 10,904.98

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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.