Home / 28,439.52-42,639.20-9,710.56

Finding the Fourth Proportional to 28,439.52, 42,639.20 and 9,710.56

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Solution

The fourth proportional to 28,439.52, 42,639.20 and 9,710.56 is: 14,558.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,439.52 : 42,639.20 = 9,710.56 : x
  2. Step 2: Convert to fraction form
    28,439.52/42,639.20 = 9,710.56/x
  3. Step 3: Cross multiply
    28,439.52x = 42,639.20 × 9,710.56
  4. Step 4: Simplify right side
    28,439.52x = 414,050,509.95
  5. Step 5: Solve for x
    x = 414,050,509.95/28,439.52
  6. Step 6: Final answer
    x = 14,558.98

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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.