Home / 20,744.40-31,116.60-14,402.10

Finding the Fourth Proportional to 20,744.40, 31,116.60 and 14,402.10

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Solution

The fourth proportional to 20,744.40, 31,116.60 and 14,402.10 is: 21,603.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,744.40 : 31,116.60 = 14,402.10 : x
  2. Step 2: Convert to fraction form
    20,744.40/31,116.60 = 14,402.10/x
  3. Step 3: Cross multiply
    20,744.40x = 31,116.60 × 14,402.10
  4. Step 4: Simplify right side
    20,744.40x = 448,144,384.86
  5. Step 5: Solve for x
    x = 448,144,384.86/20,744.40
  6. Step 6: Final answer
    x = 21,603.15

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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.