Home / 28,660.05-39,605.63-21,574.17

Finding the Fourth Proportional to 28,660.05, 39,605.63 and 21,574.17

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Solution

The fourth proportional to 28,660.05, 39,605.63 and 21,574.17 is: 29,813.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.05 : 39,605.63 = 21,574.17 : x
  2. Step 2: Convert to fraction form
    28,660.05/39,605.63 = 21,574.17/x
  3. Step 3: Cross multiply
    28,660.05x = 39,605.63 × 21,574.17
  4. Step 4: Simplify right side
    28,660.05x = 854,458,486.71
  5. Step 5: Solve for x
    x = 854,458,486.71/28,660.05
  6. Step 6: Final answer
    x = 29,813.57

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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.