Home / 15,520.25-21,405.38-9,541.23

Finding the Fourth Proportional to 15,520.25, 21,405.38 and 9,541.23

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Solution

The fourth proportional to 15,520.25, 21,405.38 and 9,541.23 is: 13,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,520.25 : 21,405.38 = 9,541.23 : x
  2. Step 2: Convert to fraction form
    15,520.25/21,405.38 = 9,541.23/x
  3. Step 3: Cross multiply
    15,520.25x = 21,405.38 × 9,541.23
  4. Step 4: Simplify right side
    15,520.25x = 204,233,606.11
  5. Step 5: Solve for x
    x = 204,233,606.11/15,520.25
  6. Step 6: Final answer
    x = 13,159.17

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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.