Home / 30,857.22-42,573.60-18,916.20

Finding the Fourth Proportional to 30,857.22, 42,573.60 and 18,916.20

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Solution

The fourth proportional to 30,857.22, 42,573.60 and 18,916.20 is: 26,098.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,857.22 : 42,573.60 = 18,916.20 : x
  2. Step 2: Convert to fraction form
    30,857.22/42,573.60 = 18,916.20/x
  3. Step 3: Cross multiply
    30,857.22x = 42,573.60 × 18,916.20
  4. Step 4: Simplify right side
    30,857.22x = 805,330,732.32
  5. Step 5: Solve for x
    x = 805,330,732.32/30,857.22
  6. Step 6: Final answer
    x = 26,098.62

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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.