Home / 28,638.61-42,947.62-9,913.57

Finding the Fourth Proportional to 28,638.61, 42,947.62 and 9,913.57

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Solution

The fourth proportional to 28,638.61, 42,947.62 and 9,913.57 is: 14,866.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.61 : 42,947.62 = 9,913.57 : x
  2. Step 2: Convert to fraction form
    28,638.61/42,947.62 = 9,913.57/x
  3. Step 3: Cross multiply
    28,638.61x = 42,947.62 × 9,913.57
  4. Step 4: Simplify right side
    28,638.61x = 425,764,237.20
  5. Step 5: Solve for x
    x = 425,764,237.20/28,638.61
  6. Step 6: Final answer
    x = 14,866.79

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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.