Home / 20,685.59-31,043.97-15,153.08

Finding the Fourth Proportional to 20,685.59, 31,043.97 and 15,153.08

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Solution

The fourth proportional to 20,685.59, 31,043.97 and 15,153.08 is: 22,741.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.59 : 31,043.97 = 15,153.08 : x
  2. Step 2: Convert to fraction form
    20,685.59/31,043.97 = 15,153.08/x
  3. Step 3: Cross multiply
    20,685.59x = 31,043.97 × 15,153.08
  4. Step 4: Simplify right side
    20,685.59x = 470,411,838.54
  5. Step 5: Solve for x
    x = 470,411,838.54/20,685.59
  6. Step 6: Final answer
    x = 22,741.05

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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.