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Finding the Fourth Proportional to 8,999.40, 13,484.70 and 7,530.60

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Solution

The fourth proportional to 8,999.40, 13,484.70 and 7,530.60 is: 11,283.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,999.40 : 13,484.70 = 7,530.60 : x
  2. Step 2: Convert to fraction form
    8,999.40/13,484.70 = 7,530.60/x
  3. Step 3: Cross multiply
    8,999.40x = 13,484.70 × 7,530.60
  4. Step 4: Simplify right side
    8,999.40x = 101,547,881.82
  5. Step 5: Solve for x
    x = 101,547,881.82/8,999.40
  6. Step 6: Final answer
    x = 11,283.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.