Home / 18,945.90-26,114.40-15,156.72

Finding the Fourth Proportional to 18,945.90, 26,114.40 and 15,156.72

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Solution

The fourth proportional to 18,945.90, 26,114.40 and 15,156.72 is: 20,891.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.90 : 26,114.40 = 15,156.72 : x
  2. Step 2: Convert to fraction form
    18,945.90/26,114.40 = 15,156.72/x
  3. Step 3: Cross multiply
    18,945.90x = 26,114.40 × 15,156.72
  4. Step 4: Simplify right side
    18,945.90x = 395,808,648.77
  5. Step 5: Solve for x
    x = 395,808,648.77/18,945.90
  6. Step 6: Final answer
    x = 20,891.52

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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.