Home / 9,961.45-13,746.69-5,485.11

Finding the Fourth Proportional to 9,961.45, 13,746.69 and 5,485.11

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Solution

The fourth proportional to 9,961.45, 13,746.69 and 5,485.11 is: 7,569.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,961.45 : 13,746.69 = 5,485.11 : x
  2. Step 2: Convert to fraction form
    9,961.45/13,746.69 = 5,485.11/x
  3. Step 3: Cross multiply
    9,961.45x = 13,746.69 × 5,485.11
  4. Step 4: Simplify right side
    9,961.45x = 75,402,055.24
  5. Step 5: Solve for x
    x = 75,402,055.24/9,961.45
  6. Step 6: Final answer
    x = 7,569.39

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Double scale
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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.