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Finding the Fourth Proportional to 15,088.83, 20,822.19 and 8,374.28

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Solution

The fourth proportional to 15,088.83, 20,822.19 and 8,374.28 is: 11,556.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.83 : 20,822.19 = 8,374.28 : x
  2. Step 2: Convert to fraction form
    15,088.83/20,822.19 = 8,374.28/x
  3. Step 3: Cross multiply
    15,088.83x = 20,822.19 × 8,374.28
  4. Step 4: Simplify right side
    15,088.83x = 174,370,807.40
  5. Step 5: Solve for x
    x = 174,370,807.40/15,088.83
  6. Step 6: Final answer
    x = 11,556.29

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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.