Home / 17,942.40-24,762.78-9,988.20

Finding the Fourth Proportional to 17,942.40, 24,762.78 and 9,988.20

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Solution

The fourth proportional to 17,942.40, 24,762.78 and 9,988.20 is: 13,784.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,942.40 : 24,762.78 = 9,988.20 : x
  2. Step 2: Convert to fraction form
    17,942.40/24,762.78 = 9,988.20/x
  3. Step 3: Cross multiply
    17,942.40x = 24,762.78 × 9,988.20
  4. Step 4: Simplify right side
    17,942.40x = 247,335,599.20
  5. Step 5: Solve for x
    x = 247,335,599.20/17,942.40
  6. Step 6: Final answer
    x = 13,784.98

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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.