Home / 21,001.68-31,506.84-14,430.96

Finding the Fourth Proportional to 21,001.68, 31,506.84 and 14,430.96

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Solution

The fourth proportional to 21,001.68, 31,506.84 and 14,430.96 is: 21,649.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.68 : 31,506.84 = 14,430.96 : x
  2. Step 2: Convert to fraction form
    21,001.68/31,506.84 = 14,430.96/x
  3. Step 3: Cross multiply
    21,001.68x = 31,506.84 × 14,430.96
  4. Step 4: Simplify right side
    21,001.68x = 454,673,947.77
  5. Step 5: Solve for x
    x = 454,673,947.77/21,001.68
  6. Step 6: Final answer
    x = 21,649.41

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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.