Home / 28,364.70-39,142.52-15,618.14

Finding the Fourth Proportional to 28,364.70, 39,142.52 and 15,618.14

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Solution

The fourth proportional to 28,364.70, 39,142.52 and 15,618.14 is: 21,552.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.70 : 39,142.52 = 15,618.14 : x
  2. Step 2: Convert to fraction form
    28,364.70/39,142.52 = 15,618.14/x
  3. Step 3: Cross multiply
    28,364.70x = 39,142.52 × 15,618.14
  4. Step 4: Simplify right side
    28,364.70x = 611,333,083.51
  5. Step 5: Solve for x
    x = 611,333,083.51/28,364.70
  6. Step 6: Final answer
    x = 21,552.60

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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.