Home / 28,220.22-38,925.26-18,132.74

Finding the Fourth Proportional to 28,220.22, 38,925.26 and 18,132.74

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Solution

The fourth proportional to 28,220.22, 38,925.26 and 18,132.74 is: 25,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.22 : 38,925.26 = 18,132.74 : x
  2. Step 2: Convert to fraction form
    28,220.22/38,925.26 = 18,132.74/x
  3. Step 3: Cross multiply
    28,220.22x = 38,925.26 × 18,132.74
  4. Step 4: Simplify right side
    28,220.22x = 705,821,619.01
  5. Step 5: Solve for x
    x = 705,821,619.01/28,220.22
  6. Step 6: Final answer
    x = 25,011.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.