Home / 9,931-13,705.14-5,455.17

Finding the Fourth Proportional to 9,931, 13,705.14 and 5,455.17

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Solution

The fourth proportional to 9,931, 13,705.14 and 5,455.17 is: 7,528.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,931 : 13,705.14 = 5,455.17 : x
  2. Step 2: Convert to fraction form
    9,931/13,705.14 = 5,455.17/x
  3. Step 3: Cross multiply
    9,931x = 13,705.14 × 5,455.17
  4. Step 4: Simplify right side
    9,931x = 74,763,868.57
  5. Step 5: Solve for x
    x = 74,763,868.57/9,931
  6. Step 6: Final answer
    x = 7,528.33

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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.