Home / 21,988.80-33,002.40-17,595.20

Finding the Fourth Proportional to 21,988.80, 33,002.40 and 17,595.20

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Solution

The fourth proportional to 21,988.80, 33,002.40 and 17,595.20 is: 26,408.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.80 : 33,002.40 = 17,595.20 : x
  2. Step 2: Convert to fraction form
    21,988.80/33,002.40 = 17,595.20/x
  3. Step 3: Cross multiply
    21,988.80x = 33,002.40 × 17,595.20
  4. Step 4: Simplify right side
    21,988.80x = 580,683,828.48
  5. Step 5: Solve for x
    x = 580,683,828.48/21,988.80
  6. Step 6: Final answer
    x = 26,408.16

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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.