Home / 28,258.21-38,998.20-15,682.96

Finding the Fourth Proportional to 28,258.21, 38,998.20 and 15,682.96

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Solution

The fourth proportional to 28,258.21, 38,998.20 and 15,682.96 is: 21,643.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.21 : 38,998.20 = 15,682.96 : x
  2. Step 2: Convert to fraction form
    28,258.21/38,998.20 = 15,682.96/x
  3. Step 3: Cross multiply
    28,258.21x = 38,998.20 × 15,682.96
  4. Step 4: Simplify right side
    28,258.21x = 611,607,210.67
  5. Step 5: Solve for x
    x = 611,607,210.67/28,258.21
  6. Step 6: Final answer
    x = 21,643.52

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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.