Home / 28,558.02-42,902.73-20,258.58

Finding the Fourth Proportional to 28,558.02, 42,902.73 and 20,258.58

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Solution

The fourth proportional to 28,558.02, 42,902.73 and 20,258.58 is: 30,434.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.02 : 42,902.73 = 20,258.58 : x
  2. Step 2: Convert to fraction form
    28,558.02/42,902.73 = 20,258.58/x
  3. Step 3: Cross multiply
    28,558.02x = 42,902.73 × 20,258.58
  4. Step 4: Simplify right side
    28,558.02x = 869,148,387.92
  5. Step 5: Solve for x
    x = 869,148,387.92/28,558.02
  6. Step 6: Final answer
    x = 30,434.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.