Home / 23,001.39-31,743.09-12,931.47

Finding the Fourth Proportional to 23,001.39, 31,743.09 and 12,931.47

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Solution

The fourth proportional to 23,001.39, 31,743.09 and 12,931.47 is: 17,846.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,001.39 : 31,743.09 = 12,931.47 : x
  2. Step 2: Convert to fraction form
    23,001.39/31,743.09 = 12,931.47/x
  3. Step 3: Cross multiply
    23,001.39x = 31,743.09 × 12,931.47
  4. Step 4: Simplify right side
    23,001.39x = 410,484,816.04
  5. Step 5: Solve for x
    x = 410,484,816.04/23,001.39
  6. Step 6: Final answer
    x = 17,846.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.