Home / 21,802.79-30,088.80-12,850.67

Finding the Fourth Proportional to 21,802.79, 30,088.80 and 12,850.67

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Solution

The fourth proportional to 21,802.79, 30,088.80 and 12,850.67 is: 17,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,802.79 : 30,088.80 = 12,850.67 : x
  2. Step 2: Convert to fraction form
    21,802.79/30,088.80 = 12,850.67/x
  3. Step 3: Cross multiply
    21,802.79x = 30,088.80 × 12,850.67
  4. Step 4: Simplify right side
    21,802.79x = 386,661,089.05
  5. Step 5: Solve for x
    x = 386,661,089.05/21,802.79
  6. Step 6: Final answer
    x = 17,734.48

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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.