Home / 13,565.15-18,722.48-7,900.75

Finding the Fourth Proportional to 13,565.15, 18,722.48 and 7,900.75

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Solution

The fourth proportional to 13,565.15, 18,722.48 and 7,900.75 is: 10,904.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.15 : 18,722.48 = 7,900.75 : x
  2. Step 2: Convert to fraction form
    13,565.15/18,722.48 = 7,900.75/x
  3. Step 3: Cross multiply
    13,565.15x = 18,722.48 × 7,900.75
  4. Step 4: Simplify right side
    13,565.15x = 147,921,617.76
  5. Step 5: Solve for x
    x = 147,921,617.76/13,565.15
  6. Step 6: Final answer
    x = 10,904.53

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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.