Home / 40,209.80-60,315.13-12,130.10

Finding the Fourth Proportional to 40,209.80, 60,315.13 and 12,130.10

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Solution

The fourth proportional to 40,209.80, 60,315.13 and 12,130.10 is: 18,195.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,209.80 : 60,315.13 = 12,130.10 : x
  2. Step 2: Convert to fraction form
    40,209.80/60,315.13 = 12,130.10/x
  3. Step 3: Cross multiply
    40,209.80x = 60,315.13 × 12,130.10
  4. Step 4: Simplify right side
    40,209.80x = 731,628,417.66
  5. Step 5: Solve for x
    x = 731,628,417.66/40,209.80
  6. Step 6: Final answer
    x = 18,195.28

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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.