Home / 20,952.84-28,916.16-12,003.12

Finding the Fourth Proportional to 20,952.84, 28,916.16 and 12,003.12

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Solution

The fourth proportional to 20,952.84, 28,916.16 and 12,003.12 is: 16,565.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.84 : 28,916.16 = 12,003.12 : x
  2. Step 2: Convert to fraction form
    20,952.84/28,916.16 = 12,003.12/x
  3. Step 3: Cross multiply
    20,952.84x = 28,916.16 × 12,003.12
  4. Step 4: Simplify right side
    20,952.84x = 347,084,138.42
  5. Step 5: Solve for x
    x = 347,084,138.42/20,952.84
  6. Step 6: Final answer
    x = 16,565.02

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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.