Home / 15,564.49-21,480.83-8,851.12

Finding the Fourth Proportional to 15,564.49, 21,480.83 and 8,851.12

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Solution

The fourth proportional to 15,564.49, 21,480.83 and 8,851.12 is: 12,215.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,564.49 : 21,480.83 = 8,851.12 : x
  2. Step 2: Convert to fraction form
    15,564.49/21,480.83 = 8,851.12/x
  3. Step 3: Cross multiply
    15,564.49x = 21,480.83 × 8,851.12
  4. Step 4: Simplify right side
    15,564.49x = 190,129,509.88
  5. Step 5: Solve for x
    x = 190,129,509.88/15,564.49
  6. Step 6: Final answer
    x = 12,215.60

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1.5x scale

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.