Home / 28,246.07-38,980.31-15,499.81

Finding the Fourth Proportional to 28,246.07, 38,980.31 and 15,499.81

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Solution

The fourth proportional to 28,246.07, 38,980.31 and 15,499.81 is: 21,390.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.07 : 38,980.31 = 15,499.81 : x
  2. Step 2: Convert to fraction form
    28,246.07/38,980.31 = 15,499.81/x
  3. Step 3: Cross multiply
    28,246.07x = 38,980.31 × 15,499.81
  4. Step 4: Simplify right side
    28,246.07x = 604,187,126.34
  5. Step 5: Solve for x
    x = 604,187,126.34/28,246.07
  6. Step 6: Final answer
    x = 21,390.13

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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.