Home / 28,009.74-38,653.29-15,434.49

Finding the Fourth Proportional to 28,009.74, 38,653.29 and 15,434.49

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Solution

The fourth proportional to 28,009.74, 38,653.29 and 15,434.49 is: 21,299.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.74 : 38,653.29 = 15,434.49 : x
  2. Step 2: Convert to fraction form
    28,009.74/38,653.29 = 15,434.49/x
  3. Step 3: Cross multiply
    28,009.74x = 38,653.29 × 15,434.49
  4. Step 4: Simplify right side
    28,009.74x = 596,593,817.97
  5. Step 5: Solve for x
    x = 596,593,817.97/28,009.74
  6. Step 6: Final answer
    x = 21,299.51

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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.