Home / 28,587.28-42,920.20-14,556.74

Finding the Fourth Proportional to 28,587.28, 42,920.20 and 14,556.74

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Solution

The fourth proportional to 28,587.28, 42,920.20 and 14,556.74 is: 21,855.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.28 : 42,920.20 = 14,556.74 : x
  2. Step 2: Convert to fraction form
    28,587.28/42,920.20 = 14,556.74/x
  3. Step 3: Cross multiply
    28,587.28x = 42,920.20 × 14,556.74
  4. Step 4: Simplify right side
    28,587.28x = 624,778,192.15
  5. Step 5: Solve for x
    x = 624,778,192.15/28,587.28
  6. Step 6: Final answer
    x = 21,855.11

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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.