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Finding the Fourth Proportional to 15,957.60, 22,028.40 and 10,298.40

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Solution

The fourth proportional to 15,957.60, 22,028.40 and 10,298.40 is: 14,216.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,957.60 : 22,028.40 = 10,298.40 : x
  2. Step 2: Convert to fraction form
    15,957.60/22,028.40 = 10,298.40/x
  3. Step 3: Cross multiply
    15,957.60x = 22,028.40 × 10,298.40
  4. Step 4: Simplify right side
    15,957.60x = 226,857,274.56
  5. Step 5: Solve for x
    x = 226,857,274.56/15,957.60
  6. Step 6: Final answer
    x = 14,216.25

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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.