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Finding the Fourth Proportional to 14,322.54, 19,765.18 and 7,948.72

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Solution

The fourth proportional to 14,322.54, 19,765.18 and 7,948.72 is: 10,969.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,322.54 : 19,765.18 = 7,948.72 : x
  2. Step 2: Convert to fraction form
    14,322.54/19,765.18 = 7,948.72/x
  3. Step 3: Cross multiply
    14,322.54x = 19,765.18 × 7,948.72
  4. Step 4: Simplify right side
    14,322.54x = 157,107,881.57
  5. Step 5: Solve for x
    x = 157,107,881.57/14,322.54
  6. Step 6: Final answer
    x = 10,969.28

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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.