Home / 31,590.02-43,580.49-20,239.22

Finding the Fourth Proportional to 31,590.02, 43,580.49 and 20,239.22

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Solution

The fourth proportional to 31,590.02, 43,580.49 and 20,239.22 is: 27,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,590.02 : 43,580.49 = 20,239.22 : x
  2. Step 2: Convert to fraction form
    31,590.02/43,580.49 = 20,239.22/x
  3. Step 3: Cross multiply
    31,590.02x = 43,580.49 × 20,239.22
  4. Step 4: Simplify right side
    31,590.02x = 882,035,124.82
  5. Step 5: Solve for x
    x = 882,035,124.82/31,590.02
  6. Step 6: Final answer
    x = 27,921.32

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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.