Home / 15,117.81-20,863.28-8,404.10

Finding the Fourth Proportional to 15,117.81, 20,863.28 and 8,404.10

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Solution

The fourth proportional to 15,117.81, 20,863.28 and 8,404.10 is: 11,598.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.81 : 20,863.28 = 8,404.10 : x
  2. Step 2: Convert to fraction form
    15,117.81/20,863.28 = 8,404.10/x
  3. Step 3: Cross multiply
    15,117.81x = 20,863.28 × 8,404.10
  4. Step 4: Simplify right side
    15,117.81x = 175,337,091.45
  5. Step 5: Solve for x
    x = 175,337,091.45/15,117.81
  6. Step 6: Final answer
    x = 11,598.05

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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.