Home / 20,079.90-30,105.81-14,461.20

Finding the Fourth Proportional to 20,079.90, 30,105.81 and 14,461.20

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Solution

The fourth proportional to 20,079.90, 30,105.81 and 14,461.20 is: 21,681.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.90 : 30,105.81 = 14,461.20 : x
  2. Step 2: Convert to fraction form
    20,079.90/30,105.81 = 14,461.20/x
  3. Step 3: Cross multiply
    20,079.90x = 30,105.81 × 14,461.20
  4. Step 4: Simplify right side
    20,079.90x = 435,366,139.57
  5. Step 5: Solve for x
    x = 435,366,139.57/20,079.90
  6. Step 6: Final answer
    x = 21,681.69

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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.