Home / 28,188.29-42,285.23-10,423.61

Finding the Fourth Proportional to 28,188.29, 42,285.23 and 10,423.61

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Solution

The fourth proportional to 28,188.29, 42,285.23 and 10,423.61 is: 15,636.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.29 : 42,285.23 = 10,423.61 : x
  2. Step 2: Convert to fraction form
    28,188.29/42,285.23 = 10,423.61/x
  3. Step 3: Cross multiply
    28,188.29x = 42,285.23 × 10,423.61
  4. Step 4: Simplify right side
    28,188.29x = 440,764,746.28
  5. Step 5: Solve for x
    x = 440,764,746.28/28,188.29
  6. Step 6: Final answer
    x = 15,636.45

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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.