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Finding the Fourth Proportional to 15,566.49, 21,483.59 and 8,853.12

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Solution

The fourth proportional to 15,566.49, 21,483.59 and 8,853.12 is: 12,218.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,566.49 : 21,483.59 = 8,853.12 : x
  2. Step 2: Convert to fraction form
    15,566.49/21,483.59 = 8,853.12/x
  3. Step 3: Cross multiply
    15,566.49x = 21,483.59 × 8,853.12
  4. Step 4: Simplify right side
    15,566.49x = 190,196,800.30
  5. Step 5: Solve for x
    x = 190,196,800.30/15,566.49
  6. Step 6: Final answer
    x = 12,218.35

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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.