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Finding the Fourth Proportional to 9,885.53, 13,653.35 and 7,208.69

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Solution

The fourth proportional to 9,885.53, 13,653.35 and 7,208.69 is: 9,956.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,885.53 : 13,653.35 = 7,208.69 : x
  2. Step 2: Convert to fraction form
    9,885.53/13,653.35 = 7,208.69/x
  3. Step 3: Cross multiply
    9,885.53x = 13,653.35 × 7,208.69
  4. Step 4: Simplify right side
    9,885.53x = 98,422,663.30
  5. Step 5: Solve for x
    x = 98,422,663.30/9,885.53
  6. Step 6: Final answer
    x = 9,956.24

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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.