Home / 20,291.27-30,434.73-9,615.05

Finding the Fourth Proportional to 20,291.27, 30,434.73 and 9,615.05

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Solution

The fourth proportional to 20,291.27, 30,434.73 and 9,615.05 is: 14,421.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.27 : 30,434.73 = 9,615.05 : x
  2. Step 2: Convert to fraction form
    20,291.27/30,434.73 = 9,615.05/x
  3. Step 3: Cross multiply
    20,291.27x = 30,434.73 × 9,615.05
  4. Step 4: Simplify right side
    20,291.27x = 292,631,298.51
  5. Step 5: Solve for x
    x = 292,631,298.51/20,291.27
  6. Step 6: Final answer
    x = 14,421.54

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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.