Home / 20,915.51-31,373.30-14,703.28

Finding the Fourth Proportional to 20,915.51, 31,373.30 and 14,703.28

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Solution

The fourth proportional to 20,915.51, 31,373.30 and 14,703.28 is: 22,054.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.51 : 31,373.30 = 14,703.28 : x
  2. Step 2: Convert to fraction form
    20,915.51/31,373.30 = 14,703.28/x
  3. Step 3: Cross multiply
    20,915.51x = 31,373.30 × 14,703.28
  4. Step 4: Simplify right side
    20,915.51x = 461,290,372.75
  5. Step 5: Solve for x
    x = 461,290,372.75/20,915.51
  6. Step 6: Final answer
    x = 22,054.95

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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.