Home / 28,549.69-39,398.63-15,803.74

Finding the Fourth Proportional to 28,549.69, 39,398.63 and 15,803.74

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Solution

The fourth proportional to 28,549.69, 39,398.63 and 15,803.74 is: 21,809.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.69 : 39,398.63 = 15,803.74 : x
  2. Step 2: Convert to fraction form
    28,549.69/39,398.63 = 15,803.74/x
  3. Step 3: Cross multiply
    28,549.69x = 39,398.63 × 15,803.74
  4. Step 4: Simplify right side
    28,549.69x = 622,645,704.88
  5. Step 5: Solve for x
    x = 622,645,704.88/28,549.69
  6. Step 6: Final answer
    x = 21,809.19

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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.