Home / 28,681.12-39,575.76-16,105.12

Finding the Fourth Proportional to 28,681.12, 39,575.76 and 16,105.12

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Solution

The fourth proportional to 28,681.12, 39,575.76 and 16,105.12 is: 22,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.12 : 39,575.76 = 16,105.12 : x
  2. Step 2: Convert to fraction form
    28,681.12/39,575.76 = 16,105.12/x
  3. Step 3: Cross multiply
    28,681.12x = 39,575.76 × 16,105.12
  4. Step 4: Simplify right side
    28,681.12x = 637,372,363.89
  5. Step 5: Solve for x
    x = 637,372,363.89/28,681.12
  6. Step 6: Final answer
    x = 22,222.72

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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.