Home / 28,320.81-42,478.46-8,599.54

Finding the Fourth Proportional to 28,320.81, 42,478.46 and 8,599.54

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Solution

The fourth proportional to 28,320.81, 42,478.46 and 8,599.54 is: 12,898.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.81 : 42,478.46 = 8,599.54 : x
  2. Step 2: Convert to fraction form
    28,320.81/42,478.46 = 8,599.54/x
  3. Step 3: Cross multiply
    28,320.81x = 42,478.46 × 8,599.54
  4. Step 4: Simplify right side
    28,320.81x = 365,294,960.52
  5. Step 5: Solve for x
    x = 365,294,960.52/28,320.81
  6. Step 6: Final answer
    x = 12,898.47

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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.