Home / 20,242.32-27,931.44-12,283.20

Finding the Fourth Proportional to 20,242.32, 27,931.44 and 12,283.20

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Solution

The fourth proportional to 20,242.32, 27,931.44 and 12,283.20 is: 16,949.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.32 : 27,931.44 = 12,283.20 : x
  2. Step 2: Convert to fraction form
    20,242.32/27,931.44 = 12,283.20/x
  3. Step 3: Cross multiply
    20,242.32x = 27,931.44 × 12,283.20
  4. Step 4: Simplify right side
    20,242.32x = 343,087,463.81
  5. Step 5: Solve for x
    x = 343,087,463.81/20,242.32
  6. Step 6: Final answer
    x = 16,949.02

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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.