Home / 20,569.88-28,386.24-12,072.08

Finding the Fourth Proportional to 20,569.88, 28,386.24 and 12,072.08

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Solution

The fourth proportional to 20,569.88, 28,386.24 and 12,072.08 is: 16,659.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.88 : 28,386.24 = 12,072.08 : x
  2. Step 2: Convert to fraction form
    20,569.88/28,386.24 = 12,072.08/x
  3. Step 3: Cross multiply
    20,569.88x = 28,386.24 × 12,072.08
  4. Step 4: Simplify right side
    20,569.88x = 342,680,960.18
  5. Step 5: Solve for x
    x = 342,680,960.18/20,569.88
  6. Step 6: Final answer
    x = 16,659.36

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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.