Home / 30,664.52-42,317.40-18,564.83

Finding the Fourth Proportional to 30,664.52, 42,317.40 and 18,564.83

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Solution

The fourth proportional to 30,664.52, 42,317.40 and 18,564.83 is: 25,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,664.52 : 42,317.40 = 18,564.83 : x
  2. Step 2: Convert to fraction form
    30,664.52/42,317.40 = 18,564.83/x
  3. Step 3: Cross multiply
    30,664.52x = 42,317.40 × 18,564.83
  4. Step 4: Simplify right side
    30,664.52x = 785,615,337.04
  5. Step 5: Solve for x
    x = 785,615,337.04/30,664.52
  6. Step 6: Final answer
    x = 25,619.68

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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.