Home / 28,802.42-39,726.84-18,712.15

Finding the Fourth Proportional to 28,802.42, 39,726.84 and 18,712.15

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Solution

The fourth proportional to 28,802.42, 39,726.84 and 18,712.15 is: 25,809.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,802.42 : 39,726.84 = 18,712.15 : x
  2. Step 2: Convert to fraction form
    28,802.42/39,726.84 = 18,712.15/x
  3. Step 3: Cross multiply
    28,802.42x = 39,726.84 × 18,712.15
  4. Step 4: Simplify right side
    28,802.42x = 743,374,390.47
  5. Step 5: Solve for x
    x = 743,374,390.47/28,802.42
  6. Step 6: Final answer
    x = 25,809.44

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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.