Home / 40,435.20-60,638.40-18,259.20

Finding the Fourth Proportional to 40,435.20, 60,638.40 and 18,259.20

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Solution

The fourth proportional to 40,435.20, 60,638.40 and 18,259.20 is: 27,382.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,435.20 : 60,638.40 = 18,259.20 : x
  2. Step 2: Convert to fraction form
    40,435.20/60,638.40 = 18,259.20/x
  3. Step 3: Cross multiply
    40,435.20x = 60,638.40 × 18,259.20
  4. Step 4: Simplify right side
    40,435.20x = 1,107,208,673.28
  5. Step 5: Solve for x
    x = 1,107,208,673.28/40,435.20
  6. Step 6: Final answer
    x = 27,382.30

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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.