Home / 12,890.13-19,337.62-3,656.13

Finding the Fourth Proportional to 12,890.13, 19,337.62 and 3,656.13

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Solution

The fourth proportional to 12,890.13, 19,337.62 and 3,656.13 is: 5,484.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.13 : 19,337.62 = 3,656.13 : x
  2. Step 2: Convert to fraction form
    12,890.13/19,337.62 = 3,656.13/x
  3. Step 3: Cross multiply
    12,890.13x = 19,337.62 × 3,656.13
  4. Step 4: Simplify right side
    12,890.13x = 70,700,852.61
  5. Step 5: Solve for x
    x = 70,700,852.61/12,890.13
  6. Step 6: Final answer
    x = 5,484.88

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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.