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Finding the Fourth Proportional to 9,928.32, 13,603.04 and 9,805.34

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Solution

The fourth proportional to 9,928.32, 13,603.04 and 9,805.34 is: 13,434.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,928.32 : 13,603.04 = 9,805.34 : x
  2. Step 2: Convert to fraction form
    9,928.32/13,603.04 = 9,805.34/x
  3. Step 3: Cross multiply
    9,928.32x = 13,603.04 × 9,805.34
  4. Step 4: Simplify right side
    9,928.32x = 133,382,315.19
  5. Step 5: Solve for x
    x = 133,382,315.19/9,928.32
  6. Step 6: Final answer
    x = 13,434.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.