Home / 28,613.84-39,486.90-15,867.01

Finding the Fourth Proportional to 28,613.84, 39,486.90 and 15,867.01

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Solution

The fourth proportional to 28,613.84, 39,486.90 and 15,867.01 is: 21,896.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.84 : 39,486.90 = 15,867.01 : x
  2. Step 2: Convert to fraction form
    28,613.84/39,486.90 = 15,867.01/x
  3. Step 3: Cross multiply
    28,613.84x = 39,486.90 × 15,867.01
  4. Step 4: Simplify right side
    28,613.84x = 626,539,037.17
  5. Step 5: Solve for x
    x = 626,539,037.17/28,613.84
  6. Step 6: Final answer
    x = 21,896.36

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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.