Home / 10,306.90-15,460.35-5,112.10

Finding the Fourth Proportional to 10,306.90, 15,460.35 and 5,112.10

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Solution

The fourth proportional to 10,306.90, 15,460.35 and 5,112.10 is: 7,668.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,306.90 : 15,460.35 = 5,112.10 : x
  2. Step 2: Convert to fraction form
    10,306.90/15,460.35 = 5,112.10/x
  3. Step 3: Cross multiply
    10,306.90x = 15,460.35 × 5,112.10
  4. Step 4: Simplify right side
    10,306.90x = 79,034,855.24
  5. Step 5: Solve for x
    x = 79,034,855.24/10,306.90
  6. Step 6: Final answer
    x = 7,668.15

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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.