Home / 13,587.53-18,738.51-8,802.61

Finding the Fourth Proportional to 13,587.53, 18,738.51 and 8,802.61

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Solution

The fourth proportional to 13,587.53, 18,738.51 and 8,802.61 is: 12,139.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.53 : 18,738.51 = 8,802.61 : x
  2. Step 2: Convert to fraction form
    13,587.53/18,738.51 = 8,802.61/x
  3. Step 3: Cross multiply
    13,587.53x = 18,738.51 × 8,802.61
  4. Step 4: Simplify right side
    13,587.53x = 164,947,715.66
  5. Step 5: Solve for x
    x = 164,947,715.66/13,587.53
  6. Step 6: Final answer
    x = 12,139.64

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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.