Home / 28,631.81-39,511.83-15,886.93

Finding the Fourth Proportional to 28,631.81, 39,511.83 and 15,886.93

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Solution

The fourth proportional to 28,631.81, 39,511.83 and 15,886.93 is: 21,923.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.81 : 39,511.83 = 15,886.93 : x
  2. Step 2: Convert to fraction form
    28,631.81/39,511.83 = 15,886.93/x
  3. Step 3: Cross multiply
    28,631.81x = 39,511.83 × 15,886.93
  4. Step 4: Simplify right side
    28,631.81x = 627,721,677.38
  5. Step 5: Solve for x
    x = 627,721,677.38/28,631.81
  6. Step 6: Final answer
    x = 21,923.93

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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.