Home / 15,328.80-21,162.41-9,956.03

Finding the Fourth Proportional to 15,328.80, 21,162.41 and 9,956.03

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Solution

The fourth proportional to 15,328.80, 21,162.41 and 9,956.03 is: 13,744.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,328.80 : 21,162.41 = 9,956.03 : x
  2. Step 2: Convert to fraction form
    15,328.80/21,162.41 = 9,956.03/x
  3. Step 3: Cross multiply
    15,328.80x = 21,162.41 × 9,956.03
  4. Step 4: Simplify right side
    15,328.80x = 210,693,433.24
  5. Step 5: Solve for x
    x = 210,693,433.24/15,328.80
  6. Step 6: Final answer
    x = 13,744.94

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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.