Home / 13,739.28-18,950.49-8,437.02

Finding the Fourth Proportional to 13,739.28, 18,950.49 and 8,437.02

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Solution

The fourth proportional to 13,739.28, 18,950.49 and 8,437.02 is: 11,637.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.28 : 18,950.49 = 8,437.02 : x
  2. Step 2: Convert to fraction form
    13,739.28/18,950.49 = 8,437.02/x
  3. Step 3: Cross multiply
    13,739.28x = 18,950.49 × 8,437.02
  4. Step 4: Simplify right side
    13,739.28x = 159,885,663.14
  5. Step 5: Solve for x
    x = 159,885,663.14/13,739.28
  6. Step 6: Final answer
    x = 11,637.12

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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.