Home / 28,149.96-42,210.78-9,423.48

Finding the Fourth Proportional to 28,149.96, 42,210.78 and 9,423.48

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Solution

The fourth proportional to 28,149.96, 42,210.78 and 9,423.48 is: 14,130.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.96 : 42,210.78 = 9,423.48 : x
  2. Step 2: Convert to fraction form
    28,149.96/42,210.78 = 9,423.48/x
  3. Step 3: Cross multiply
    28,149.96x = 42,210.78 × 9,423.48
  4. Step 4: Simplify right side
    28,149.96x = 397,772,441.11
  5. Step 5: Solve for x
    x = 397,772,441.11/28,149.96
  6. Step 6: Final answer
    x = 14,130.48

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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.