Home / 10,928.21-15,082.07-6,681.75

Finding the Fourth Proportional to 10,928.21, 15,082.07 and 6,681.75

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Solution

The fourth proportional to 10,928.21, 15,082.07 and 6,681.75 is: 9,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.21 : 15,082.07 = 6,681.75 : x
  2. Step 2: Convert to fraction form
    10,928.21/15,082.07 = 6,681.75/x
  3. Step 3: Cross multiply
    10,928.21x = 15,082.07 × 6,681.75
  4. Step 4: Simplify right side
    10,928.21x = 100,774,587.81
  5. Step 5: Solve for x
    x = 100,774,587.81/10,928.21
  6. Step 6: Final answer
    x = 9,221.51

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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.