Home / 10,307.45-15,430.42-10,131.13

Finding the Fourth Proportional to 10,307.45, 15,430.42 and 10,131.13

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Solution

The fourth proportional to 10,307.45, 15,430.42 and 10,131.13 is: 15,166.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,307.45 : 15,430.42 = 10,131.13 : x
  2. Step 2: Convert to fraction form
    10,307.45/15,430.42 = 10,131.13/x
  3. Step 3: Cross multiply
    10,307.45x = 15,430.42 × 10,131.13
  4. Step 4: Simplify right side
    10,307.45x = 156,327,564.62
  5. Step 5: Solve for x
    x = 156,327,564.62/10,307.45
  6. Step 6: Final answer
    x = 15,166.46

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1.5x scale

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.