Home / 10,102.48-15,148.23-5,428.06

Finding the Fourth Proportional to 10,102.48, 15,148.23 and 5,428.06

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Solution

The fourth proportional to 10,102.48, 15,148.23 and 5,428.06 is: 8,139.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,102.48 : 15,148.23 = 5,428.06 : x
  2. Step 2: Convert to fraction form
    10,102.48/15,148.23 = 5,428.06/x
  3. Step 3: Cross multiply
    10,102.48x = 15,148.23 × 5,428.06
  4. Step 4: Simplify right side
    10,102.48x = 82,225,501.33
  5. Step 5: Solve for x
    x = 82,225,501.33/10,102.48
  6. Step 6: Final answer
    x = 8,139.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.