Home / 21,113.84-31,657.96-14,532.80

Finding the Fourth Proportional to 21,113.84, 31,657.96 and 14,532.80

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Solution

The fourth proportional to 21,113.84, 31,657.96 and 14,532.80 is: 21,790.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.84 : 31,657.96 = 14,532.80 : x
  2. Step 2: Convert to fraction form
    21,113.84/31,657.96 = 14,532.80/x
  3. Step 3: Cross multiply
    21,113.84x = 31,657.96 × 14,532.80
  4. Step 4: Simplify right side
    21,113.84x = 460,078,801.09
  5. Step 5: Solve for x
    x = 460,078,801.09/21,113.84
  6. Step 6: Final answer
    x = 21,790.39

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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.