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Finding the Fourth Proportional to 15,588.04, 21,512.04 and 9,619.60

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Solution

The fourth proportional to 15,588.04, 21,512.04 and 9,619.60 is: 13,275.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588.04 : 21,512.04 = 9,619.60 : x
  2. Step 2: Convert to fraction form
    15,588.04/21,512.04 = 9,619.60/x
  3. Step 3: Cross multiply
    15,588.04x = 21,512.04 × 9,619.60
  4. Step 4: Simplify right side
    15,588.04x = 206,937,219.98
  5. Step 5: Solve for x
    x = 206,937,219.98/15,588.04
  6. Step 6: Final answer
    x = 13,275.38

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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.