Home / 18,937.20-26,132.29-10,439.31

Finding the Fourth Proportional to 18,937.20, 26,132.29 and 10,439.31

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Solution

The fourth proportional to 18,937.20, 26,132.29 and 10,439.31 is: 14,405.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.20 : 26,132.29 = 10,439.31 : x
  2. Step 2: Convert to fraction form
    18,937.20/26,132.29 = 10,439.31/x
  3. Step 3: Cross multiply
    18,937.20x = 26,132.29 × 10,439.31
  4. Step 4: Simplify right side
    18,937.20x = 272,802,999.40
  5. Step 5: Solve for x
    x = 272,802,999.40/18,937.20
  6. Step 6: Final answer
    x = 14,405.67

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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.