Home / 12,047.20-18,058.65-5,478.10

Finding the Fourth Proportional to 12,047.20, 18,058.65 and 5,478.10

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Solution

The fourth proportional to 12,047.20, 18,058.65 and 5,478.10 is: 8,211.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,047.20 : 18,058.65 = 5,478.10 : x
  2. Step 2: Convert to fraction form
    12,047.20/18,058.65 = 5,478.10/x
  3. Step 3: Cross multiply
    12,047.20x = 18,058.65 × 5,478.10
  4. Step 4: Simplify right side
    12,047.20x = 98,927,090.57
  5. Step 5: Solve for x
    x = 98,927,090.57/12,047.20
  6. Step 6: Final answer
    x = 8,211.63

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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.