Home / 45,281.35-67,931.61-13,693.78

Finding the Fourth Proportional to 45,281.35, 67,931.61 and 13,693.78

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Solution

The fourth proportional to 45,281.35, 67,931.61 and 13,693.78 is: 20,543.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,281.35 : 67,931.61 = 13,693.78 : x
  2. Step 2: Convert to fraction form
    45,281.35/67,931.61 = 13,693.78/x
  3. Step 3: Cross multiply
    45,281.35x = 67,931.61 × 13,693.78
  4. Step 4: Simplify right side
    45,281.35x = 930,240,522.39
  5. Step 5: Solve for x
    x = 930,240,522.39/45,281.35
  6. Step 6: Final answer
    x = 20,543.57

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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.