Home / 10,390.07-15,588.75-5,390.04

Finding the Fourth Proportional to 10,390.07, 15,588.75 and 5,390.04

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Solution

The fourth proportional to 10,390.07, 15,588.75 and 5,390.04 is: 8,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,390.07 : 15,588.75 = 5,390.04 : x
  2. Step 2: Convert to fraction form
    10,390.07/15,588.75 = 5,390.04/x
  3. Step 3: Cross multiply
    10,390.07x = 15,588.75 × 5,390.04
  4. Step 4: Simplify right side
    10,390.07x = 84,024,064.72
  5. Step 5: Solve for x
    x = 84,024,064.72/10,390.07
  6. Step 6: Final answer
    x = 8,086.96

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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.