Home / 28,319.12-42,442.35-11,690.83

Finding the Fourth Proportional to 28,319.12, 42,442.35 and 11,690.83

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Solution

The fourth proportional to 28,319.12, 42,442.35 and 11,690.83 is: 17,521.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.12 : 42,442.35 = 11,690.83 : x
  2. Step 2: Convert to fraction form
    28,319.12/42,442.35 = 11,690.83/x
  3. Step 3: Cross multiply
    28,319.12x = 42,442.35 × 11,690.83
  4. Step 4: Simplify right side
    28,319.12x = 496,186,307.86
  5. Step 5: Solve for x
    x = 496,186,307.86/28,319.12
  6. Step 6: Final answer
    x = 17,521.25

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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.