Home / 14,478.29-19,980.83-8,812.14

Finding the Fourth Proportional to 14,478.29, 19,980.83 and 8,812.14

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Solution

The fourth proportional to 14,478.29, 19,980.83 and 8,812.14 is: 12,161.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.29 : 19,980.83 = 8,812.14 : x
  2. Step 2: Convert to fraction form
    14,478.29/19,980.83 = 8,812.14/x
  3. Step 3: Cross multiply
    14,478.29x = 19,980.83 × 8,812.14
  4. Step 4: Simplify right side
    14,478.29x = 176,073,881.20
  5. Step 5: Solve for x
    x = 176,073,881.20/14,478.29
  6. Step 6: Final answer
    x = 12,161.23

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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.