Home / 13,695.05-18,899.84-7,726.59

Finding the Fourth Proportional to 13,695.05, 18,899.84 and 7,726.59

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Solution

The fourth proportional to 13,695.05, 18,899.84 and 7,726.59 is: 10,663.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.05 : 18,899.84 = 7,726.59 : x
  2. Step 2: Convert to fraction form
    13,695.05/18,899.84 = 7,726.59/x
  3. Step 3: Cross multiply
    13,695.05x = 18,899.84 × 7,726.59
  4. Step 4: Simplify right side
    13,695.05x = 146,031,334.06
  5. Step 5: Solve for x
    x = 146,031,334.06/13,695.05
  6. Step 6: Final answer
    x = 10,663.07

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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.