Home / 15,690.50-21,652.38-8,616.46

Finding the Fourth Proportional to 15,690.50, 21,652.38 and 8,616.46

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Solution

The fourth proportional to 15,690.50, 21,652.38 and 8,616.46 is: 11,890.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.50 : 21,652.38 = 8,616.46 : x
  2. Step 2: Convert to fraction form
    15,690.50/21,652.38 = 8,616.46/x
  3. Step 3: Cross multiply
    15,690.50x = 21,652.38 × 8,616.46
  4. Step 4: Simplify right side
    15,690.50x = 186,566,866.17
  5. Step 5: Solve for x
    x = 186,566,866.17/15,690.50
  6. Step 6: Final answer
    x = 11,890.43

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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.