Home / 14,478.40-21,715.36-5,719.36

Finding the Fourth Proportional to 14,478.40, 21,715.36 and 5,719.36

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Solution

The fourth proportional to 14,478.40, 21,715.36 and 5,719.36 is: 8,578.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.40 : 21,715.36 = 5,719.36 : x
  2. Step 2: Convert to fraction form
    14,478.40/21,715.36 = 5,719.36/x
  3. Step 3: Cross multiply
    14,478.40x = 21,715.36 × 5,719.36
  4. Step 4: Simplify right side
    14,478.40x = 124,197,961.37
  5. Step 5: Solve for x
    x = 124,197,961.37/14,478.40
  6. Step 6: Final answer
    x = 8,578.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.