Home / 20,285.39-27,953.96-15,510.74

Finding the Fourth Proportional to 20,285.39, 27,953.96 and 15,510.74

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Solution

The fourth proportional to 20,285.39, 27,953.96 and 15,510.74 is: 21,374.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.39 : 27,953.96 = 15,510.74 : x
  2. Step 2: Convert to fraction form
    20,285.39/27,953.96 = 15,510.74/x
  3. Step 3: Cross multiply
    20,285.39x = 27,953.96 × 15,510.74
  4. Step 4: Simplify right side
    20,285.39x = 433,586,605.53
  5. Step 5: Solve for x
    x = 433,586,605.53/20,285.39
  6. Step 6: Final answer
    x = 21,374.33

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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.