Home / 14,008.13-19,331.63-7,720.91

Finding the Fourth Proportional to 14,008.13, 19,331.63 and 7,720.91

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Solution

The fourth proportional to 14,008.13, 19,331.63 and 7,720.91 is: 10,655.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008.13 : 19,331.63 = 7,720.91 : x
  2. Step 2: Convert to fraction form
    14,008.13/19,331.63 = 7,720.91/x
  3. Step 3: Cross multiply
    14,008.13x = 19,331.63 × 7,720.91
  4. Step 4: Simplify right side
    14,008.13x = 149,257,640.12
  5. Step 5: Solve for x
    x = 149,257,640.12/14,008.13
  6. Step 6: Final answer
    x = 10,655.08

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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.