Home / 30,861.81-42,589.13-17,432.42

Finding the Fourth Proportional to 30,861.81, 42,589.13 and 17,432.42

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Solution

The fourth proportional to 30,861.81, 42,589.13 and 17,432.42 is: 24,056.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861.81 : 42,589.13 = 17,432.42 : x
  2. Step 2: Convert to fraction form
    30,861.81/42,589.13 = 17,432.42/x
  3. Step 3: Cross multiply
    30,861.81x = 42,589.13 × 17,432.42
  4. Step 4: Simplify right side
    30,861.81x = 742,431,301.49
  5. Step 5: Solve for x
    x = 742,431,301.49/30,861.81
  6. Step 6: Final answer
    x = 24,056.64

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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.