Home / 21,208.95-31,818.02-8,061.57

Finding the Fourth Proportional to 21,208.95, 31,818.02 and 8,061.57

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Solution

The fourth proportional to 21,208.95, 31,818.02 and 8,061.57 is: 12,094.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.95 : 31,818.02 = 8,061.57 : x
  2. Step 2: Convert to fraction form
    21,208.95/31,818.02 = 8,061.57/x
  3. Step 3: Cross multiply
    21,208.95x = 31,818.02 × 8,061.57
  4. Step 4: Simplify right side
    21,208.95x = 256,503,155.18
  5. Step 5: Solve for x
    x = 256,503,155.18/21,208.95
  6. Step 6: Final answer
    x = 12,094.10

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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.