Home / 20,130.80-30,167.40-13,967.60

Finding the Fourth Proportional to 20,130.80, 30,167.40 and 13,967.60

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Solution

The fourth proportional to 20,130.80, 30,167.40 and 13,967.60 is: 20,931.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.80 : 30,167.40 = 13,967.60 : x
  2. Step 2: Convert to fraction form
    20,130.80/30,167.40 = 13,967.60/x
  3. Step 3: Cross multiply
    20,130.80x = 30,167.40 × 13,967.60
  4. Step 4: Simplify right side
    20,130.80x = 421,366,176.24
  5. Step 5: Solve for x
    x = 421,366,176.24/20,130.80
  6. Step 6: Final answer
    x = 20,931.42

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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.