Home / 20,318.47-28,038.18-11,364.43

Finding the Fourth Proportional to 20,318.47, 28,038.18 and 11,364.43

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Solution

The fourth proportional to 20,318.47, 28,038.18 and 11,364.43 is: 15,682.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.47 : 28,038.18 = 11,364.43 : x
  2. Step 2: Convert to fraction form
    20,318.47/28,038.18 = 11,364.43/x
  3. Step 3: Cross multiply
    20,318.47x = 28,038.18 × 11,364.43
  4. Step 4: Simplify right side
    20,318.47x = 318,637,933.94
  5. Step 5: Solve for x
    x = 318,637,933.94/20,318.47
  6. Step 6: Final answer
    x = 15,682.18

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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.