Home / 12,701.28-17,528.40-7,665.42

Finding the Fourth Proportional to 12,701.28, 17,528.40 and 7,665.42

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Solution

The fourth proportional to 12,701.28, 17,528.40 and 7,665.42 is: 10,578.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,701.28 : 17,528.40 = 7,665.42 : x
  2. Step 2: Convert to fraction form
    12,701.28/17,528.40 = 7,665.42/x
  3. Step 3: Cross multiply
    12,701.28x = 17,528.40 × 7,665.42
  4. Step 4: Simplify right side
    12,701.28x = 134,362,509.60
  5. Step 5: Solve for x
    x = 134,362,509.60/12,701.28
  6. Step 6: Final answer
    x = 10,578.66

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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.