Home / 18,213.81-25,129.27-10,254.50

Finding the Fourth Proportional to 18,213.81, 25,129.27 and 10,254.50

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Solution

The fourth proportional to 18,213.81, 25,129.27 and 10,254.50 is: 14,147.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.81 : 25,129.27 = 10,254.50 : x
  2. Step 2: Convert to fraction form
    18,213.81/25,129.27 = 10,254.50/x
  3. Step 3: Cross multiply
    18,213.81x = 25,129.27 × 10,254.50
  4. Step 4: Simplify right side
    18,213.81x = 257,688,080.62
  5. Step 5: Solve for x
    x = 257,688,080.62/18,213.81
  6. Step 6: Final answer
    x = 14,147.95

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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.