Home / 21,386.88-32,085.79-8,902.76

Finding the Fourth Proportional to 21,386.88, 32,085.79 and 8,902.76

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Solution

The fourth proportional to 21,386.88, 32,085.79 and 8,902.76 is: 13,356.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,386.88 : 32,085.79 = 8,902.76 : x
  2. Step 2: Convert to fraction form
    21,386.88/32,085.79 = 8,902.76/x
  3. Step 3: Cross multiply
    21,386.88x = 32,085.79 × 8,902.76
  4. Step 4: Simplify right side
    21,386.88x = 285,651,905.09
  5. Step 5: Solve for x
    x = 285,651,905.09/21,386.88
  6. Step 6: Final answer
    x = 13,356.41

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1.5x scale

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.