Home / 30,865.68-42,580.26-18,119.16

Finding the Fourth Proportional to 30,865.68, 42,580.26 and 18,119.16

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Solution

The fourth proportional to 30,865.68, 42,580.26 and 18,119.16 is: 24,996.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,865.68 : 42,580.26 = 18,119.16 : x
  2. Step 2: Convert to fraction form
    30,865.68/42,580.26 = 18,119.16/x
  3. Step 3: Cross multiply
    30,865.68x = 42,580.26 × 18,119.16
  4. Step 4: Simplify right side
    30,865.68x = 771,518,543.78
  5. Step 5: Solve for x
    x = 771,518,543.78/30,865.68
  6. Step 6: Final answer
    x = 24,996.00

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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.