Home / 28,488.87-42,730.07-7,710.75

Finding the Fourth Proportional to 28,488.87, 42,730.07 and 7,710.75

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Solution

The fourth proportional to 28,488.87, 42,730.07 and 7,710.75 is: 11,565.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.87 : 42,730.07 = 7,710.75 : x
  2. Step 2: Convert to fraction form
    28,488.87/42,730.07 = 7,710.75/x
  3. Step 3: Cross multiply
    28,488.87x = 42,730.07 × 7,710.75
  4. Step 4: Simplify right side
    28,488.87x = 329,480,848.70
  5. Step 5: Solve for x
    x = 329,480,848.70/28,488.87
  6. Step 6: Final answer
    x = 11,565.25

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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.