Home / 13,011.40-19,478.76-8,065.12

Finding the Fourth Proportional to 13,011.40, 19,478.76 and 8,065.12

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Solution

The fourth proportional to 13,011.40, 19,478.76 and 8,065.12 is: 12,073.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.40 : 19,478.76 = 8,065.12 : x
  2. Step 2: Convert to fraction form
    13,011.40/19,478.76 = 8,065.12/x
  3. Step 3: Cross multiply
    13,011.40x = 19,478.76 × 8,065.12
  4. Step 4: Simplify right side
    13,011.40x = 157,098,536.85
  5. Step 5: Solve for x
    x = 157,098,536.85/13,011.40
  6. Step 6: Final answer
    x = 12,073.91

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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.