Home / 31,199.72-43,055.70-18,624.20

Finding the Fourth Proportional to 31,199.72, 43,055.70 and 18,624.20

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Solution

The fourth proportional to 31,199.72, 43,055.70 and 18,624.20 is: 25,701.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,199.72 : 43,055.70 = 18,624.20 : x
  2. Step 2: Convert to fraction form
    31,199.72/43,055.70 = 18,624.20/x
  3. Step 3: Cross multiply
    31,199.72x = 43,055.70 × 18,624.20
  4. Step 4: Simplify right side
    31,199.72x = 801,877,967.94
  5. Step 5: Solve for x
    x = 801,877,967.94/31,199.72
  6. Step 6: Final answer
    x = 25,701.45

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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.