Home / 13,990.20-19,301.54-8,955.24

Finding the Fourth Proportional to 13,990.20, 19,301.54 and 8,955.24

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Solution

The fourth proportional to 13,990.20, 19,301.54 and 8,955.24 is: 12,355.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.20 : 19,301.54 = 8,955.24 : x
  2. Step 2: Convert to fraction form
    13,990.20/19,301.54 = 8,955.24/x
  3. Step 3: Cross multiply
    13,990.20x = 19,301.54 × 8,955.24
  4. Step 4: Simplify right side
    13,990.20x = 172,849,923.07
  5. Step 5: Solve for x
    x = 172,849,923.07/13,990.20
  6. Step 6: Final answer
    x = 12,355.07

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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.