Home / 12,681.05-17,499.70-7,015.35

Finding the Fourth Proportional to 12,681.05, 17,499.70 and 7,015.35

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Solution

The fourth proportional to 12,681.05, 17,499.70 and 7,015.35 is: 9,681.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.05 : 17,499.70 = 7,015.35 : x
  2. Step 2: Convert to fraction form
    12,681.05/17,499.70 = 7,015.35/x
  3. Step 3: Cross multiply
    12,681.05x = 17,499.70 × 7,015.35
  4. Step 4: Simplify right side
    12,681.05x = 122,766,520.40
  5. Step 5: Solve for x
    x = 122,766,520.40/12,681.05
  6. Step 6: Final answer
    x = 9,681.10

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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.