Home / 30,488.40-45,732.60-9,711.90

Finding the Fourth Proportional to 30,488.40, 45,732.60 and 9,711.90

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Solution

The fourth proportional to 30,488.40, 45,732.60 and 9,711.90 is: 14,567.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,488.40 : 45,732.60 = 9,711.90 : x
  2. Step 2: Convert to fraction form
    30,488.40/45,732.60 = 9,711.90/x
  3. Step 3: Cross multiply
    30,488.40x = 45,732.60 × 9,711.90
  4. Step 4: Simplify right side
    30,488.40x = 444,150,437.94
  5. Step 5: Solve for x
    x = 444,150,437.94/30,488.40
  6. Step 6: Final answer
    x = 14,567.85

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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.