Home / 22,279.81-30,725.58-15,120.11

Finding the Fourth Proportional to 22,279.81, 30,725.58 and 15,120.11

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Solution

The fourth proportional to 22,279.81, 30,725.58 and 15,120.11 is: 20,851.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,279.81 : 30,725.58 = 15,120.11 : x
  2. Step 2: Convert to fraction form
    22,279.81/30,725.58 = 15,120.11/x
  3. Step 3: Cross multiply
    22,279.81x = 30,725.58 × 15,120.11
  4. Step 4: Simplify right side
    22,279.81x = 464,574,073.81
  5. Step 5: Solve for x
    x = 464,574,073.81/22,279.81
  6. Step 6: Final answer
    x = 20,851.80

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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.