Home / 20,362.52-28,117.40-15,317.98

Finding the Fourth Proportional to 20,362.52, 28,117.40 and 15,317.98

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Solution

The fourth proportional to 20,362.52, 28,117.40 and 15,317.98 is: 21,151.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.52 : 28,117.40 = 15,317.98 : x
  2. Step 2: Convert to fraction form
    20,362.52/28,117.40 = 15,317.98/x
  3. Step 3: Cross multiply
    20,362.52x = 28,117.40 × 15,317.98
  4. Step 4: Simplify right side
    20,362.52x = 430,701,623.97
  5. Step 5: Solve for x
    x = 430,701,623.97/20,362.52
  6. Step 6: Final answer
    x = 21,151.68

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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.