Home / 21,878.33-30,176.10-14,312.52

Finding the Fourth Proportional to 21,878.33, 30,176.10 and 14,312.52

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Solution

The fourth proportional to 21,878.33, 30,176.10 and 14,312.52 is: 19,740.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,878.33 : 30,176.10 = 14,312.52 : x
  2. Step 2: Convert to fraction form
    21,878.33/30,176.10 = 14,312.52/x
  3. Step 3: Cross multiply
    21,878.33x = 30,176.10 × 14,312.52
  4. Step 4: Simplify right side
    21,878.33x = 431,896,034.77
  5. Step 5: Solve for x
    x = 431,896,034.77/21,878.33
  6. Step 6: Final answer
    x = 19,740.82

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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.