Home / 20,317.68-30,471.48-13,784.40

Finding the Fourth Proportional to 20,317.68, 30,471.48 and 13,784.40

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Solution

The fourth proportional to 20,317.68, 30,471.48 and 13,784.40 is: 20,673.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.68 : 30,471.48 = 13,784.40 : x
  2. Step 2: Convert to fraction form
    20,317.68/30,471.48 = 13,784.40/x
  3. Step 3: Cross multiply
    20,317.68x = 30,471.48 × 13,784.40
  4. Step 4: Simplify right side
    20,317.68x = 420,031,068.91
  5. Step 5: Solve for x
    x = 420,031,068.91/20,317.68
  6. Step 6: Final answer
    x = 20,673.18

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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.