Home / 30,861.40-42,588.52-16,713.96

Finding the Fourth Proportional to 30,861.40, 42,588.52 and 16,713.96

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Solution

The fourth proportional to 30,861.40, 42,588.52 and 16,713.96 is: 23,065.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861.40 : 42,588.52 = 16,713.96 : x
  2. Step 2: Convert to fraction form
    30,861.40/42,588.52 = 16,713.96/x
  3. Step 3: Cross multiply
    30,861.40x = 42,588.52 × 16,713.96
  4. Step 4: Simplify right side
    30,861.40x = 711,822,819.74
  5. Step 5: Solve for x
    x = 711,822,819.74/30,861.40
  6. Step 6: Final answer
    x = 23,065.15

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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.