Home / 28,765.12-43,147.68-9,045.40

Finding the Fourth Proportional to 28,765.12, 43,147.68 and 9,045.40

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Solution

The fourth proportional to 28,765.12, 43,147.68 and 9,045.40 is: 13,568.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,765.12 : 43,147.68 = 9,045.40 : x
  2. Step 2: Convert to fraction form
    28,765.12/43,147.68 = 9,045.40/x
  3. Step 3: Cross multiply
    28,765.12x = 43,147.68 × 9,045.40
  4. Step 4: Simplify right side
    28,765.12x = 390,288,024.67
  5. Step 5: Solve for x
    x = 390,288,024.67/28,765.12
  6. Step 6: Final answer
    x = 13,568.10

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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.