Home / 15,916.12-21,961.80-9,200.45

Finding the Fourth Proportional to 15,916.12, 21,961.80 and 9,200.45

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Solution

The fourth proportional to 15,916.12, 21,961.80 and 9,200.45 is: 12,695.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.12 : 21,961.80 = 9,200.45 : x
  2. Step 2: Convert to fraction form
    15,916.12/21,961.80 = 9,200.45/x
  3. Step 3: Cross multiply
    15,916.12x = 21,961.80 × 9,200.45
  4. Step 4: Simplify right side
    15,916.12x = 202,058,497.71
  5. Step 5: Solve for x
    x = 202,058,497.71/15,916.12
  6. Step 6: Final answer
    x = 12,695.21

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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.