Home / 13,140.18-19,705.08-4,817.70

Finding the Fourth Proportional to 13,140.18, 19,705.08 and 4,817.70

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Solution

The fourth proportional to 13,140.18, 19,705.08 and 4,817.70 is: 7,224.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.18 : 19,705.08 = 4,817.70 : x
  2. Step 2: Convert to fraction form
    13,140.18/19,705.08 = 4,817.70/x
  3. Step 3: Cross multiply
    13,140.18x = 19,705.08 × 4,817.70
  4. Step 4: Simplify right side
    13,140.18x = 94,933,163.92
  5. Step 5: Solve for x
    x = 94,933,163.92/13,140.18
  6. Step 6: Final answer
    x = 7,224.65

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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.