Home / 15,711.36-21,655.68-10,673.28

Finding the Fourth Proportional to 15,711.36, 21,655.68 and 10,673.28

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Solution

The fourth proportional to 15,711.36, 21,655.68 and 10,673.28 is: 14,711.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,711.36 : 21,655.68 = 10,673.28 : x
  2. Step 2: Convert to fraction form
    15,711.36/21,655.68 = 10,673.28/x
  3. Step 3: Cross multiply
    15,711.36x = 21,655.68 × 10,673.28
  4. Step 4: Simplify right side
    15,711.36x = 231,137,136.23
  5. Step 5: Solve for x
    x = 231,137,136.23/15,711.36
  6. Step 6: Final answer
    x = 14,711.47

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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.