Home / 15,704.48-21,669.72-8,988.56

Finding the Fourth Proportional to 15,704.48, 21,669.72 and 8,988.56

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Solution

The fourth proportional to 15,704.48, 21,669.72 and 8,988.56 is: 12,402.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,704.48 : 21,669.72 = 8,988.56 : x
  2. Step 2: Convert to fraction form
    15,704.48/21,669.72 = 8,988.56/x
  3. Step 3: Cross multiply
    15,704.48x = 21,669.72 × 8,988.56
  4. Step 4: Simplify right side
    15,704.48x = 194,779,578.40
  5. Step 5: Solve for x
    x = 194,779,578.40/15,704.48
  6. Step 6: Final answer
    x = 12,402.80

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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.