Home / 10,487.14-15,730.69-7,190.23

Finding the Fourth Proportional to 10,487.14, 15,730.69 and 7,190.23

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Solution

The fourth proportional to 10,487.14, 15,730.69 and 7,190.23 is: 10,785.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.14 : 15,730.69 = 7,190.23 : x
  2. Step 2: Convert to fraction form
    10,487.14/15,730.69 = 7,190.23/x
  3. Step 3: Cross multiply
    10,487.14x = 15,730.69 × 7,190.23
  4. Step 4: Simplify right side
    10,487.14x = 113,107,279.16
  5. Step 5: Solve for x
    x = 113,107,279.16/10,487.14
  6. Step 6: Final answer
    x = 10,785.33

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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.