Home / 15,436.32-21,302.28-9,147.36

Finding the Fourth Proportional to 15,436.32, 21,302.28 and 9,147.36

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Solution

The fourth proportional to 15,436.32, 21,302.28 and 9,147.36 is: 12,623.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,436.32 : 21,302.28 = 9,147.36 : x
  2. Step 2: Convert to fraction form
    15,436.32/21,302.28 = 9,147.36/x
  3. Step 3: Cross multiply
    15,436.32x = 21,302.28 × 9,147.36
  4. Step 4: Simplify right side
    15,436.32x = 194,859,623.98
  5. Step 5: Solve for x
    x = 194,859,623.98/15,436.32
  6. Step 6: Final answer
    x = 12,623.45

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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.