Home / 15,384.11-21,230.36-9,015.29

Finding the Fourth Proportional to 15,384.11, 21,230.36 and 9,015.29

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Solution

The fourth proportional to 15,384.11, 21,230.36 and 9,015.29 is: 12,441.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,384.11 : 21,230.36 = 9,015.29 : x
  2. Step 2: Convert to fraction form
    15,384.11/21,230.36 = 9,015.29/x
  3. Step 3: Cross multiply
    15,384.11x = 21,230.36 × 9,015.29
  4. Step 4: Simplify right side
    15,384.11x = 191,397,700.98
  5. Step 5: Solve for x
    x = 191,397,700.98/15,384.11
  6. Step 6: Final answer
    x = 12,441.26

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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.