Home / 20,926.20-28,876.86-19,254.36

Finding the Fourth Proportional to 20,926.20, 28,876.86 and 19,254.36

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Solution

The fourth proportional to 20,926.20, 28,876.86 and 19,254.36 is: 26,569.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.20 : 28,876.86 = 19,254.36 : x
  2. Step 2: Convert to fraction form
    20,926.20/28,876.86 = 19,254.36/x
  3. Step 3: Cross multiply
    20,926.20x = 28,876.86 × 19,254.36
  4. Step 4: Simplify right side
    20,926.20x = 556,005,458.11
  5. Step 5: Solve for x
    x = 556,005,458.11/20,926.20
  6. Step 6: Final answer
    x = 26,569.82

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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.