Home / 19,988.12-29,977.09-5,945.00

Finding the Fourth Proportional to 19,988.12, 29,977.09 and 5,945.00

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Solution

The fourth proportional to 19,988.12, 29,977.09 and 5,945.00 is: 8,915.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.12 : 29,977.09 = 5,945.00 : x
  2. Step 2: Convert to fraction form
    19,988.12/29,977.09 = 5,945.00/x
  3. Step 3: Cross multiply
    19,988.12x = 29,977.09 × 5,945.00
  4. Step 4: Simplify right side
    19,988.12x = 178,213,635.30
  5. Step 5: Solve for x
    x = 178,213,635.30/19,988.12
  6. Step 6: Final answer
    x = 8,915.98

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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.