Home / 15,662.40-21,612.60-9,374.64

Finding the Fourth Proportional to 15,662.40, 21,612.60 and 9,374.64

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Solution

The fourth proportional to 15,662.40, 21,612.60 and 9,374.64 is: 12,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.40 : 21,612.60 = 9,374.64 : x
  2. Step 2: Convert to fraction form
    15,662.40/21,612.60 = 9,374.64/x
  3. Step 3: Cross multiply
    15,662.40x = 21,612.60 × 9,374.64
  4. Step 4: Simplify right side
    15,662.40x = 202,610,344.46
  5. Step 5: Solve for x
    x = 202,610,344.46/15,662.40
  6. Step 6: Final answer
    x = 12,936.10

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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.