Home / 19,988.40-29,986.86-5,948.48

Finding the Fourth Proportional to 19,988.40, 29,986.86 and 5,948.48

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Solution

The fourth proportional to 19,988.40, 29,986.86 and 5,948.48 is: 8,923.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.40 : 29,986.86 = 5,948.48 : x
  2. Step 2: Convert to fraction form
    19,988.40/29,986.86 = 5,948.48/x
  3. Step 3: Cross multiply
    19,988.40x = 29,986.86 × 5,948.48
  4. Step 4: Simplify right side
    19,988.40x = 178,376,087.04
  5. Step 5: Solve for x
    x = 178,376,087.04/19,988.40
  6. Step 6: Final answer
    x = 8,923.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.