Home / 20,959.61-28,916.06-12,002.36

Finding the Fourth Proportional to 20,959.61, 28,916.06 and 12,002.36

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Solution

The fourth proportional to 20,959.61, 28,916.06 and 12,002.36 is: 16,558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.61 : 28,916.06 = 12,002.36 : x
  2. Step 2: Convert to fraction form
    20,959.61/28,916.06 = 12,002.36/x
  3. Step 3: Cross multiply
    20,959.61x = 28,916.06 × 12,002.36
  4. Step 4: Simplify right side
    20,959.61x = 347,060,757.31
  5. Step 5: Solve for x
    x = 347,060,757.31/20,959.61
  6. Step 6: Final answer
    x = 16,558.55

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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.