Home / 20,690.49-31,035.81-13,714.81

Finding the Fourth Proportional to 20,690.49, 31,035.81 and 13,714.81

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Solution

The fourth proportional to 20,690.49, 31,035.81 and 13,714.81 is: 20,572.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.49 : 31,035.81 = 13,714.81 : x
  2. Step 2: Convert to fraction form
    20,690.49/31,035.81 = 13,714.81/x
  3. Step 3: Cross multiply
    20,690.49x = 31,035.81 × 13,714.81
  4. Step 4: Simplify right side
    20,690.49x = 425,650,237.35
  5. Step 5: Solve for x
    x = 425,650,237.35/20,690.49
  6. Step 6: Final answer
    x = 20,572.26

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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.