Home / 20,689.60-31,048.26-7,362.08

Finding the Fourth Proportional to 20,689.60, 31,048.26 and 7,362.08

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Solution

The fourth proportional to 20,689.60, 31,048.26 and 7,362.08 is: 11,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.60 : 31,048.26 = 7,362.08 : x
  2. Step 2: Convert to fraction form
    20,689.60/31,048.26 = 7,362.08/x
  3. Step 3: Cross multiply
    20,689.60x = 31,048.26 × 7,362.08
  4. Step 4: Simplify right side
    20,689.60x = 228,579,773.98
  5. Step 5: Solve for x
    x = 228,579,773.98/20,689.60
  6. Step 6: Final answer
    x = 11,048.05

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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.