Home / 39,875.63-55,027.67-21,970.48

Finding the Fourth Proportional to 39,875.63, 55,027.67 and 21,970.48

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Solution

The fourth proportional to 39,875.63, 55,027.67 and 21,970.48 is: 30,318.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,875.63 : 55,027.67 = 21,970.48 : x
  2. Step 2: Convert to fraction form
    39,875.63/55,027.67 = 21,970.48/x
  3. Step 3: Cross multiply
    39,875.63x = 55,027.67 × 21,970.48
  4. Step 4: Simplify right side
    39,875.63x = 1,208,984,323.18
  5. Step 5: Solve for x
    x = 1,208,984,323.18/39,875.63
  6. Step 6: Final answer
    x = 30,318.88

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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.