Home / 13,525.95-20,288.70-5,207.78

Finding the Fourth Proportional to 13,525.95, 20,288.70 and 5,207.78

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Solution

The fourth proportional to 13,525.95, 20,288.70 and 5,207.78 is: 7,811.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,525.95 : 20,288.70 = 5,207.78 : x
  2. Step 2: Convert to fraction form
    13,525.95/20,288.70 = 5,207.78/x
  3. Step 3: Cross multiply
    13,525.95x = 20,288.70 × 5,207.78
  4. Step 4: Simplify right side
    13,525.95x = 105,658,984.64
  5. Step 5: Solve for x
    x = 105,658,984.64/13,525.95
  6. Step 6: Final answer
    x = 7,811.58

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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.