Home / 10,660.40-14,680.95-10,431.44

Finding the Fourth Proportional to 10,660.40, 14,680.95 and 10,431.44

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Solution

The fourth proportional to 10,660.40, 14,680.95 and 10,431.44 is: 14,365.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,660.40 : 14,680.95 = 10,431.44 : x
  2. Step 2: Convert to fraction form
    10,660.40/14,680.95 = 10,431.44/x
  3. Step 3: Cross multiply
    10,660.40x = 14,680.95 × 10,431.44
  4. Step 4: Simplify right side
    10,660.40x = 153,143,449.07
  5. Step 5: Solve for x
    x = 153,143,449.07/10,660.40
  6. Step 6: Final answer
    x = 14,365.64

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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.