Home / 31,346.78-47,036.33-20,824.07

Finding the Fourth Proportional to 31,346.78, 47,036.33 and 20,824.07

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Solution

The fourth proportional to 31,346.78, 47,036.33 and 20,824.07 is: 31,246.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,346.78 : 47,036.33 = 20,824.07 : x
  2. Step 2: Convert to fraction form
    31,346.78/47,036.33 = 20,824.07/x
  3. Step 3: Cross multiply
    31,346.78x = 47,036.33 × 20,824.07
  4. Step 4: Simplify right side
    31,346.78x = 979,487,828.46
  5. Step 5: Solve for x
    x = 979,487,828.46/31,346.78
  6. Step 6: Final answer
    x = 31,246.84

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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.