Home / 28,004.10-38,642.18-18,949.25

Finding the Fourth Proportional to 28,004.10, 38,642.18 and 18,949.25

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Solution

The fourth proportional to 28,004.10, 38,642.18 and 18,949.25 is: 26,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.10 : 38,642.18 = 18,949.25 : x
  2. Step 2: Convert to fraction form
    28,004.10/38,642.18 = 18,949.25/x
  3. Step 3: Cross multiply
    28,004.10x = 38,642.18 × 18,949.25
  4. Step 4: Simplify right side
    28,004.10x = 732,240,041.41
  5. Step 5: Solve for x
    x = 732,240,041.41/28,004.10
  6. Step 6: Final answer
    x = 26,147.60

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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.