Home / 20,463.75-28,243.85-12,810.58

Finding the Fourth Proportional to 20,463.75, 28,243.85 and 12,810.58

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Solution

The fourth proportional to 20,463.75, 28,243.85 and 12,810.58 is: 17,681.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,463.75 : 28,243.85 = 12,810.58 : x
  2. Step 2: Convert to fraction form
    20,463.75/28,243.85 = 12,810.58/x
  3. Step 3: Cross multiply
    20,463.75x = 28,243.85 × 12,810.58
  4. Step 4: Simplify right side
    20,463.75x = 361,819,894.66
  5. Step 5: Solve for x
    x = 361,819,894.66/20,463.75
  6. Step 6: Final answer
    x = 17,681.02

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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.