Home / 31,289.10-43,192.89-19,973.54

Finding the Fourth Proportional to 31,289.10, 43,192.89 and 19,973.54

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Solution

The fourth proportional to 31,289.10, 43,192.89 and 19,973.54 is: 27,572.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.10 : 43,192.89 = 19,973.54 : x
  2. Step 2: Convert to fraction form
    31,289.10/43,192.89 = 19,973.54/x
  3. Step 3: Cross multiply
    31,289.10x = 43,192.89 × 19,973.54
  4. Step 4: Simplify right side
    31,289.10x = 862,714,700.17
  5. Step 5: Solve for x
    x = 862,714,700.17/31,289.10
  6. Step 6: Final answer
    x = 27,572.37

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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.