Home / 30,079.50-45,108.09-13,423.02

Finding the Fourth Proportional to 30,079.50, 45,108.09 and 13,423.02

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Solution

The fourth proportional to 30,079.50, 45,108.09 and 13,423.02 is: 20,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,079.50 : 45,108.09 = 13,423.02 : x
  2. Step 2: Convert to fraction form
    30,079.50/45,108.09 = 13,423.02/x
  3. Step 3: Cross multiply
    30,079.50x = 45,108.09 × 13,423.02
  4. Step 4: Simplify right side
    30,079.50x = 605,486,794.23
  5. Step 5: Solve for x
    x = 605,486,794.23/30,079.50
  6. Step 6: Final answer
    x = 20,129.55

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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.