Home / 28,203.60-38,875.80-22,225.36

Finding the Fourth Proportional to 28,203.60, 38,875.80 and 22,225.36

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Solution

The fourth proportional to 28,203.60, 38,875.80 and 22,225.36 is: 30,635.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.60 : 38,875.80 = 22,225.36 : x
  2. Step 2: Convert to fraction form
    28,203.60/38,875.80 = 22,225.36/x
  3. Step 3: Cross multiply
    28,203.60x = 38,875.80 × 22,225.36
  4. Step 4: Simplify right side
    28,203.60x = 864,028,650.29
  5. Step 5: Solve for x
    x = 864,028,650.29/28,203.60
  6. Step 6: Final answer
    x = 30,635.40

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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.