Home / 13,417.68-20,126.40-7,909.32

Finding the Fourth Proportional to 13,417.68, 20,126.40 and 7,909.32

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Solution

The fourth proportional to 13,417.68, 20,126.40 and 7,909.32 is: 11,863.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.68 : 20,126.40 = 7,909.32 : x
  2. Step 2: Convert to fraction form
    13,417.68/20,126.40 = 7,909.32/x
  3. Step 3: Cross multiply
    13,417.68x = 20,126.40 × 7,909.32
  4. Step 4: Simplify right side
    13,417.68x = 159,186,138.05
  5. Step 5: Solve for x
    x = 159,186,138.05/13,417.68
  6. Step 6: Final answer
    x = 11,863.91

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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.