Home / 28,430.43-39,250.05-18,886.68

Finding the Fourth Proportional to 28,430.43, 39,250.05 and 18,886.68

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Solution

The fourth proportional to 28,430.43, 39,250.05 and 18,886.68 is: 26,074.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.43 : 39,250.05 = 18,886.68 : x
  2. Step 2: Convert to fraction form
    28,430.43/39,250.05 = 18,886.68/x
  3. Step 3: Cross multiply
    28,430.43x = 39,250.05 × 18,886.68
  4. Step 4: Simplify right side
    28,430.43x = 741,303,134.33
  5. Step 5: Solve for x
    x = 741,303,134.33/28,430.43
  6. Step 6: Final answer
    x = 26,074.28

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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.