Home / 20,243.79-30,365.69-10,376.77

Finding the Fourth Proportional to 20,243.79, 30,365.69 and 10,376.77

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Solution

The fourth proportional to 20,243.79, 30,365.69 and 10,376.77 is: 15,565.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.79 : 30,365.69 = 10,376.77 : x
  2. Step 2: Convert to fraction form
    20,243.79/30,365.69 = 10,376.77/x
  3. Step 3: Cross multiply
    20,243.79x = 30,365.69 × 10,376.77
  4. Step 4: Simplify right side
    20,243.79x = 315,097,781.02
  5. Step 5: Solve for x
    x = 315,097,781.02/20,243.79
  6. Step 6: Final answer
    x = 15,565.16

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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.