Home / 20,127.64-30,177.69-10,247.80

Finding the Fourth Proportional to 20,127.64, 30,177.69 and 10,247.80

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Solution

The fourth proportional to 20,127.64, 30,177.69 and 10,247.80 is: 15,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.64 : 30,177.69 = 10,247.80 : x
  2. Step 2: Convert to fraction form
    20,127.64/30,177.69 = 10,247.80/x
  3. Step 3: Cross multiply
    20,127.64x = 30,177.69 × 10,247.80
  4. Step 4: Simplify right side
    20,127.64x = 309,254,931.58
  5. Step 5: Solve for x
    x = 309,254,931.58/20,127.64
  6. Step 6: Final answer
    x = 15,364.69

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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.