Home / 40,945.20-61,417.80-13,243.20

Finding the Fourth Proportional to 40,945.20, 61,417.80 and 13,243.20

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Solution

The fourth proportional to 40,945.20, 61,417.80 and 13,243.20 is: 19,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,945.20 : 61,417.80 = 13,243.20 : x
  2. Step 2: Convert to fraction form
    40,945.20/61,417.80 = 13,243.20/x
  3. Step 3: Cross multiply
    40,945.20x = 61,417.80 × 13,243.20
  4. Step 4: Simplify right side
    40,945.20x = 813,368,208.96
  5. Step 5: Solve for x
    x = 813,368,208.96/40,945.20
  6. Step 6: Final answer
    x = 19,864.80

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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.