Home / 28,661.88-42,967.17-11,127.54

Finding the Fourth Proportional to 28,661.88, 42,967.17 and 11,127.54

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Solution

The fourth proportional to 28,661.88, 42,967.17 and 11,127.54 is: 16,681.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.88 : 42,967.17 = 11,127.54 : x
  2. Step 2: Convert to fraction form
    28,661.88/42,967.17 = 11,127.54/x
  3. Step 3: Cross multiply
    28,661.88x = 42,967.17 × 11,127.54
  4. Step 4: Simplify right side
    28,661.88x = 478,118,902.86
  5. Step 5: Solve for x
    x = 478,118,902.86/28,661.88
  6. Step 6: Final answer
    x = 16,681.35

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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.