Home / 20,891.63-31,364.16-17,948.90

Finding the Fourth Proportional to 20,891.63, 31,364.16 and 17,948.90

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Solution

The fourth proportional to 20,891.63, 31,364.16 and 17,948.90 is: 26,946.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891.63 : 31,364.16 = 17,948.90 : x
  2. Step 2: Convert to fraction form
    20,891.63/31,364.16 = 17,948.90/x
  3. Step 3: Cross multiply
    20,891.63x = 31,364.16 × 17,948.90
  4. Step 4: Simplify right side
    20,891.63x = 562,952,171.42
  5. Step 5: Solve for x
    x = 562,952,171.42/20,891.63
  6. Step 6: Final answer
    x = 26,946.30

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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.