Home / 15,436.90-21,301.41-9,148.06

Finding the Fourth Proportional to 15,436.90, 21,301.41 and 9,148.06

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Solution

The fourth proportional to 15,436.90, 21,301.41 and 9,148.06 is: 12,623.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.90 : 21,301.41 = 9,148.06 : x
  2. Step 2: Convert to fraction form
    15,436.90/21,301.41 = 9,148.06/x
  3. Step 3: Cross multiply
    15,436.90x = 21,301.41 × 9,148.06
  4. Step 4: Simplify right side
    15,436.90x = 194,866,576.76
  5. Step 5: Solve for x
    x = 194,866,576.76/15,436.90
  6. Step 6: Final answer
    x = 12,623.43

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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.