Home / 21,283.56-31,931.52-8,801.28

Finding the Fourth Proportional to 21,283.56, 31,931.52 and 8,801.28

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Solution

The fourth proportional to 21,283.56, 31,931.52 and 8,801.28 is: 13,204.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.56 : 31,931.52 = 8,801.28 : x
  2. Step 2: Convert to fraction form
    21,283.56/31,931.52 = 8,801.28/x
  3. Step 3: Cross multiply
    21,283.56x = 31,931.52 × 8,801.28
  4. Step 4: Simplify right side
    21,283.56x = 281,038,248.35
  5. Step 5: Solve for x
    x = 281,038,248.35/21,283.56
  6. Step 6: Final answer
    x = 13,204.48

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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.