Home / 28,587.36-42,887.20-8,865.52

Finding the Fourth Proportional to 28,587.36, 42,887.20 and 8,865.52

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Solution

The fourth proportional to 28,587.36, 42,887.20 and 8,865.52 is: 13,300.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.36 : 42,887.20 = 8,865.52 : x
  2. Step 2: Convert to fraction form
    28,587.36/42,887.20 = 8,865.52/x
  3. Step 3: Cross multiply
    28,587.36x = 42,887.20 × 8,865.52
  4. Step 4: Simplify right side
    28,587.36x = 380,217,329.34
  5. Step 5: Solve for x
    x = 380,217,329.34/28,587.36
  6. Step 6: Final answer
    x = 13,300.19

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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.