Home / 18,973.13-26,158.58-15,557.56

Finding the Fourth Proportional to 18,973.13, 26,158.58 and 15,557.56

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Solution

The fourth proportional to 18,973.13, 26,158.58 and 15,557.56 is: 21,449.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.13 : 26,158.58 = 15,557.56 : x
  2. Step 2: Convert to fraction form
    18,973.13/26,158.58 = 15,557.56/x
  3. Step 3: Cross multiply
    18,973.13x = 26,158.58 × 15,557.56
  4. Step 4: Simplify right side
    18,973.13x = 406,963,469.28
  5. Step 5: Solve for x
    x = 406,963,469.28/18,973.13
  6. Step 6: Final answer
    x = 21,449.46

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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.