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Finding the Fourth Proportional to 15,656.19, 21,605.04 and 8,582.46

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Solution

The fourth proportional to 15,656.19, 21,605.04 and 8,582.46 is: 11,843.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.19 : 21,605.04 = 8,582.46 : x
  2. Step 2: Convert to fraction form
    15,656.19/21,605.04 = 8,582.46/x
  3. Step 3: Cross multiply
    15,656.19x = 21,605.04 × 8,582.46
  4. Step 4: Simplify right side
    15,656.19x = 185,424,391.60
  5. Step 5: Solve for x
    x = 185,424,391.60/15,656.19
  6. Step 6: Final answer
    x = 11,843.52

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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.