Home / 20,627.54-28,451.30-18,931.52

Finding the Fourth Proportional to 20,627.54, 28,451.30 and 18,931.52

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Solution

The fourth proportional to 20,627.54, 28,451.30 and 18,931.52 is: 26,112.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.54 : 28,451.30 = 18,931.52 : x
  2. Step 2: Convert to fraction form
    20,627.54/28,451.30 = 18,931.52/x
  3. Step 3: Cross multiply
    20,627.54x = 28,451.30 × 18,931.52
  4. Step 4: Simplify right side
    20,627.54x = 538,626,118.06
  5. Step 5: Solve for x
    x = 538,626,118.06/20,627.54
  6. Step 6: Final answer
    x = 26,112.00

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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.