Home / 14,008.50-19,331.73-7,721.28

Finding the Fourth Proportional to 14,008.50, 19,331.73 and 7,721.28

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Solution

The fourth proportional to 14,008.50, 19,331.73 and 7,721.28 is: 10,655.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.50 : 19,331.73 = 7,721.28 : x
  2. Step 2: Convert to fraction form
    14,008.50/19,331.73 = 7,721.28/x
  3. Step 3: Cross multiply
    14,008.50x = 19,331.73 × 7,721.28
  4. Step 4: Simplify right side
    14,008.50x = 149,265,700.21
  5. Step 5: Solve for x
    x = 149,265,700.21/14,008.50
  6. Step 6: Final answer
    x = 10,655.37

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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.