Home / 28,029.84-38,681.16-15,454.60

Finding the Fourth Proportional to 28,029.84, 38,681.16 and 15,454.60

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Solution

The fourth proportional to 28,029.84, 38,681.16 and 15,454.60 is: 21,327.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,029.84 : 38,681.16 = 15,454.60 : x
  2. Step 2: Convert to fraction form
    28,029.84/38,681.16 = 15,454.60/x
  3. Step 3: Cross multiply
    28,029.84x = 38,681.16 × 15,454.60
  4. Step 4: Simplify right side
    28,029.84x = 597,801,855.34
  5. Step 5: Solve for x
    x = 597,801,855.34/28,029.84
  6. Step 6: Final answer
    x = 21,327.34

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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.