Home / 18,485.97-25,510.61-9,988.07

Finding the Fourth Proportional to 18,485.97, 25,510.61 and 9,988.07

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Solution

The fourth proportional to 18,485.97, 25,510.61 and 9,988.07 is: 13,783.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.97 : 25,510.61 = 9,988.07 : x
  2. Step 2: Convert to fraction form
    18,485.97/25,510.61 = 9,988.07/x
  3. Step 3: Cross multiply
    18,485.97x = 25,510.61 × 9,988.07
  4. Step 4: Simplify right side
    18,485.97x = 254,801,793.07
  5. Step 5: Solve for x
    x = 254,801,793.07/18,485.97
  6. Step 6: Final answer
    x = 13,783.52

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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.