Home / 21,937.43-30,265.04-12,981.67

Finding the Fourth Proportional to 21,937.43, 30,265.04 and 12,981.67

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Solution

The fourth proportional to 21,937.43, 30,265.04 and 12,981.67 is: 17,909.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,937.43 : 30,265.04 = 12,981.67 : x
  2. Step 2: Convert to fraction form
    21,937.43/30,265.04 = 12,981.67/x
  3. Step 3: Cross multiply
    21,937.43x = 30,265.04 × 12,981.67
  4. Step 4: Simplify right side
    21,937.43x = 392,890,718.61
  5. Step 5: Solve for x
    x = 392,890,718.61/21,937.43
  6. Step 6: Final answer
    x = 17,909.60

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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.