Home / 30,861.12-42,581.28-17,431.04

Finding the Fourth Proportional to 30,861.12, 42,581.28 and 17,431.04

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Solution

The fourth proportional to 30,861.12, 42,581.28 and 17,431.04 is: 24,050.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861.12 : 42,581.28 = 17,431.04 : x
  2. Step 2: Convert to fraction form
    30,861.12/42,581.28 = 17,431.04/x
  3. Step 3: Cross multiply
    30,861.12x = 42,581.28 × 17,431.04
  4. Step 4: Simplify right side
    30,861.12x = 742,235,994.93
  5. Step 5: Solve for x
    x = 742,235,994.93/30,861.12
  6. Step 6: Final answer
    x = 24,050.84

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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.