Home / 19,918.63-29,877.88-5,126.30

Finding the Fourth Proportional to 19,918.63, 29,877.88 and 5,126.30

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Solution

The fourth proportional to 19,918.63, 29,877.88 and 5,126.30 is: 7,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.63 : 29,877.88 = 5,126.30 : x
  2. Step 2: Convert to fraction form
    19,918.63/29,877.88 = 5,126.30/x
  3. Step 3: Cross multiply
    19,918.63x = 29,877.88 × 5,126.30
  4. Step 4: Simplify right side
    19,918.63x = 153,162,976.24
  5. Step 5: Solve for x
    x = 153,162,976.24/19,918.63
  6. Step 6: Final answer
    x = 7,689.43

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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.