Home / 28,565.12-42,844.40-7,790.24

Finding the Fourth Proportional to 28,565.12, 42,844.40 and 7,790.24

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Solution

The fourth proportional to 28,565.12, 42,844.40 and 7,790.24 is: 11,684.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.12 : 42,844.40 = 7,790.24 : x
  2. Step 2: Convert to fraction form
    28,565.12/42,844.40 = 7,790.24/x
  3. Step 3: Cross multiply
    28,565.12x = 42,844.40 × 7,790.24
  4. Step 4: Simplify right side
    28,565.12x = 333,768,158.66
  5. Step 5: Solve for x
    x = 333,768,158.66/28,565.12
  6. Step 6: Final answer
    x = 11,684.47

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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.