Home / 10,015.70-15,022.40-2,620.87

Finding the Fourth Proportional to 10,015.70, 15,022.40 and 2,620.87

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Solution

The fourth proportional to 10,015.70, 15,022.40 and 2,620.87 is: 3,931.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.70 : 15,022.40 = 2,620.87 : x
  2. Step 2: Convert to fraction form
    10,015.70/15,022.40 = 2,620.87/x
  3. Step 3: Cross multiply
    10,015.70x = 15,022.40 × 2,620.87
  4. Step 4: Simplify right side
    10,015.70x = 39,371,706.83
  5. Step 5: Solve for x
    x = 39,371,706.83/10,015.70
  6. Step 6: Final answer
    x = 3,931.00

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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.