Home / 20,129.27-30,213.74-15,114.22

Finding the Fourth Proportional to 20,129.27, 30,213.74 and 15,114.22

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Solution

The fourth proportional to 20,129.27, 30,213.74 and 15,114.22 is: 22,686.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.27 : 30,213.74 = 15,114.22 : x
  2. Step 2: Convert to fraction form
    20,129.27/30,213.74 = 15,114.22/x
  3. Step 3: Cross multiply
    20,129.27x = 30,213.74 × 15,114.22
  4. Step 4: Simplify right side
    20,129.27x = 456,657,075.63
  5. Step 5: Solve for x
    x = 456,657,075.63/20,129.27
  6. Step 6: Final answer
    x = 22,686.23

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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.