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Finding the Fourth Proportional to 20,569.01, 30,853.51 and 7,421.37

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Solution

The fourth proportional to 20,569.01, 30,853.51 and 7,421.37 is: 11,132.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.01 : 30,853.51 = 7,421.37 : x
  2. Step 2: Convert to fraction form
    20,569.01/30,853.51 = 7,421.37/x
  3. Step 3: Cross multiply
    20,569.01x = 30,853.51 × 7,421.37
  4. Step 4: Simplify right side
    20,569.01x = 228,975,313.51
  5. Step 5: Solve for x
    x = 228,975,313.51/20,569.01
  6. Step 6: Final answer
    x = 11,132.06

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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.