Home / 28,530.64-42,837.50-20,254.60

Finding the Fourth Proportional to 28,530.64, 42,837.50 and 20,254.60

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Solution

The fourth proportional to 28,530.64, 42,837.50 and 20,254.60 is: 30,411.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.64 : 42,837.50 = 20,254.60 : x
  2. Step 2: Convert to fraction form
    28,530.64/42,837.50 = 20,254.60/x
  3. Step 3: Cross multiply
    28,530.64x = 42,837.50 × 20,254.60
  4. Step 4: Simplify right side
    28,530.64x = 867,656,427.50
  5. Step 5: Solve for x
    x = 867,656,427.50/28,530.64
  6. Step 6: Final answer
    x = 30,411.39

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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.