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Finding the Fourth Proportional to 9,775.30, 13,659.50 and 9,775.30

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Solution

The fourth proportional to 9,775.30, 13,659.50 and 9,775.30 is: 13,659.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,775.30 : 13,659.50 = 9,775.30 : x
  2. Step 2: Convert to fraction form
    9,775.30/13,659.50 = 9,775.30/x
  3. Step 3: Cross multiply
    9,775.30x = 13,659.50 × 9,775.30
  4. Step 4: Simplify right side
    9,775.30x = 133,525,710.35
  5. Step 5: Solve for x
    x = 133,525,710.35/9,775.30
  6. Step 6: Final answer
    x = 13,659.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.