Home / 20,292.94-27,981.45-13,113.40

Finding the Fourth Proportional to 20,292.94, 27,981.45 and 13,113.40

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Solution

The fourth proportional to 20,292.94, 27,981.45 and 13,113.40 is: 18,081.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.94 : 27,981.45 = 13,113.40 : x
  2. Step 2: Convert to fraction form
    20,292.94/27,981.45 = 13,113.40/x
  3. Step 3: Cross multiply
    20,292.94x = 27,981.45 × 13,113.40
  4. Step 4: Simplify right side
    20,292.94x = 366,931,946.43
  5. Step 5: Solve for x
    x = 366,931,946.43/20,292.94
  6. Step 6: Final answer
    x = 18,081.75

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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.