Home / 28,881.52-39,841.72-18,826.80

Finding the Fourth Proportional to 28,881.52, 39,841.72 and 18,826.80

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Solution

The fourth proportional to 28,881.52, 39,841.72 and 18,826.80 is: 25,971.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,881.52 : 39,841.72 = 18,826.80 : x
  2. Step 2: Convert to fraction form
    28,881.52/39,841.72 = 18,826.80/x
  3. Step 3: Cross multiply
    28,881.52x = 39,841.72 × 18,826.80
  4. Step 4: Simplify right side
    28,881.52x = 750,092,094.10
  5. Step 5: Solve for x
    x = 750,092,094.10/28,881.52
  6. Step 6: Final answer
    x = 25,971.35

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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.