Home / 27,868-38,457.90-15,292.80

Finding the Fourth Proportional to 27,868, 38,457.90 and 15,292.80

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Solution

The fourth proportional to 27,868, 38,457.90 and 15,292.80 is: 21,104.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,868 : 38,457.90 = 15,292.80 : x
  2. Step 2: Convert to fraction form
    27,868/38,457.90 = 15,292.80/x
  3. Step 3: Cross multiply
    27,868x = 38,457.90 × 15,292.80
  4. Step 4: Simplify right side
    27,868x = 588,128,973.12
  5. Step 5: Solve for x
    x = 588,128,973.12/27,868
  6. Step 6: Final answer
    x = 21,104.10

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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.