Home / 21,307.56-31,984.71-8,836.32

Finding the Fourth Proportional to 21,307.56, 31,984.71 and 8,836.32

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Solution

The fourth proportional to 21,307.56, 31,984.71 and 8,836.32 is: 13,264.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.56 : 31,984.71 = 8,836.32 : x
  2. Step 2: Convert to fraction form
    21,307.56/31,984.71 = 8,836.32/x
  3. Step 3: Cross multiply
    21,307.56x = 31,984.71 × 8,836.32
  4. Step 4: Simplify right side
    21,307.56x = 282,627,219.47
  5. Step 5: Solve for x
    x = 282,627,219.47/21,307.56
  6. Step 6: Final answer
    x = 13,264.18

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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.