Home / 20,148.95-30,217.35-8,459.57

Finding the Fourth Proportional to 20,148.95, 30,217.35 and 8,459.57

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Solution

The fourth proportional to 20,148.95, 30,217.35 and 8,459.57 is: 12,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.95 : 30,217.35 = 8,459.57 : x
  2. Step 2: Convert to fraction form
    20,148.95/30,217.35 = 8,459.57/x
  3. Step 3: Cross multiply
    20,148.95x = 30,217.35 × 8,459.57
  4. Step 4: Simplify right side
    20,148.95x = 255,625,894.81
  5. Step 5: Solve for x
    x = 255,625,894.81/20,148.95
  6. Step 6: Final answer
    x = 12,686.81

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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.