Home / 39,763.95-54,875.31-21,615.90

Finding the Fourth Proportional to 39,763.95, 54,875.31 and 21,615.90

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Solution

The fourth proportional to 39,763.95, 54,875.31 and 21,615.90 is: 29,830.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,763.95 : 54,875.31 = 21,615.90 : x
  2. Step 2: Convert to fraction form
    39,763.95/54,875.31 = 21,615.90/x
  3. Step 3: Cross multiply
    39,763.95x = 54,875.31 × 21,615.90
  4. Step 4: Simplify right side
    39,763.95x = 1,186,179,383.41
  5. Step 5: Solve for x
    x = 1,186,179,383.41/39,763.95
  6. Step 6: Final answer
    x = 29,830.52

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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.