Home / 28,065,778.68-38,730,774.24-15,188,722.68

Finding the Fourth Proportional to 28,065,778.68, 38,730,774.24 and 15,188,722.68

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Solution

The fourth proportional to 28,065,778.68, 38,730,774.24 and 15,188,722.68 is: 20,960,437.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065,778.68 : 38,730,774.24 = 15,188,722.68 : x
  2. Step 2: Convert to fraction form
    28,065,778.68/38,730,774.24 = 15,188,722.68/x
  3. Step 3: Cross multiply
    28,065,778.68x = 38,730,774.24 × 15,188,722.68
  4. Step 4: Simplify right side
    28,065,778.68x = 588,270,989,113,047.75
  5. Step 5: Solve for x
    x = 588,270,989,113,047.75/28,065,778.68
  6. Step 6: Final answer
    x = 20,960,437.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.