Home / 28,731.84-39,649.18-15,984.38

Finding the Fourth Proportional to 28,731.84, 39,649.18 and 15,984.38

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Solution

The fourth proportional to 28,731.84, 39,649.18 and 15,984.38 is: 22,058.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731.84 : 39,649.18 = 15,984.38 : x
  2. Step 2: Convert to fraction form
    28,731.84/39,649.18 = 15,984.38/x
  3. Step 3: Cross multiply
    28,731.84x = 39,649.18 × 15,984.38
  4. Step 4: Simplify right side
    28,731.84x = 633,767,281.64
  5. Step 5: Solve for x
    x = 633,767,281.64/28,731.84
  6. Step 6: Final answer
    x = 22,058.01

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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.