Home / 13,515.91-20,274.38-3,655.19

Finding the Fourth Proportional to 13,515.91, 20,274.38 and 3,655.19

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Solution

The fourth proportional to 13,515.91, 20,274.38 and 3,655.19 is: 5,482.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.91 : 20,274.38 = 3,655.19 : x
  2. Step 2: Convert to fraction form
    13,515.91/20,274.38 = 3,655.19/x
  3. Step 3: Cross multiply
    13,515.91x = 20,274.38 × 3,655.19
  4. Step 4: Simplify right side
    13,515.91x = 74,106,777.71
  5. Step 5: Solve for x
    x = 74,106,777.71/13,515.91
  6. Step 6: Final answer
    x = 5,482.93

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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.