Home / 9,931.78-13,706.34-5,455.48

Finding the Fourth Proportional to 9,931.78, 13,706.34 and 5,455.48

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Solution

The fourth proportional to 9,931.78, 13,706.34 and 5,455.48 is: 7,528.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,931.78 : 13,706.34 = 5,455.48 : x
  2. Step 2: Convert to fraction form
    9,931.78/13,706.34 = 5,455.48/x
  3. Step 3: Cross multiply
    9,931.78x = 13,706.34 × 5,455.48
  4. Step 4: Simplify right side
    9,931.78x = 74,774,663.74
  5. Step 5: Solve for x
    x = 74,774,663.74/9,931.78
  6. Step 6: Final answer
    x = 7,528.83

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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.