Home / 13,416.20-18,510.06-7,750.20

Finding the Fourth Proportional to 13,416.20, 18,510.06 and 7,750.20

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Solution

The fourth proportional to 13,416.20, 18,510.06 and 7,750.20 is: 10,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.20 : 18,510.06 = 7,750.20 : x
  2. Step 2: Convert to fraction form
    13,416.20/18,510.06 = 7,750.20/x
  3. Step 3: Cross multiply
    13,416.20x = 18,510.06 × 7,750.20
  4. Step 4: Simplify right side
    13,416.20x = 143,456,667.01
  5. Step 5: Solve for x
    x = 143,456,667.01/13,416.20
  6. Step 6: Final answer
    x = 10,692.80

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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.