Home / 10,117.90-15,178.68-3,097.79

Finding the Fourth Proportional to 10,117.90, 15,178.68 and 3,097.79

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Solution

The fourth proportional to 10,117.90, 15,178.68 and 3,097.79 is: 4,647.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.90 : 15,178.68 = 3,097.79 : x
  2. Step 2: Convert to fraction form
    10,117.90/15,178.68 = 3,097.79/x
  3. Step 3: Cross multiply
    10,117.90x = 15,178.68 × 3,097.79
  4. Step 4: Simplify right side
    10,117.90x = 47,020,363.12
  5. Step 5: Solve for x
    x = 47,020,363.12/10,117.90
  6. Step 6: Final answer
    x = 4,647.25

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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.