Home / 28,253.09-38,991.08-15,677.84

Finding the Fourth Proportional to 28,253.09, 38,991.08 and 15,677.84

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Solution

The fourth proportional to 28,253.09, 38,991.08 and 15,677.84 is: 21,636.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,253.09 : 38,991.08 = 15,677.84 : x
  2. Step 2: Convert to fraction form
    28,253.09/38,991.08 = 15,677.84/x
  3. Step 3: Cross multiply
    28,253.09x = 38,991.08 × 15,677.84
  4. Step 4: Simplify right side
    28,253.09x = 611,295,718.71
  5. Step 5: Solve for x
    x = 611,295,718.71/28,253.09
  6. Step 6: Final answer
    x = 21,636.42

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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.