Home / 42,853.09-64,287.47-13,268.92

Finding the Fourth Proportional to 42,853.09, 64,287.47 and 13,268.92

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Solution

The fourth proportional to 42,853.09, 64,287.47 and 13,268.92 is: 19,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,853.09 : 64,287.47 = 13,268.92 : x
  2. Step 2: Convert to fraction form
    42,853.09/64,287.47 = 13,268.92/x
  3. Step 3: Cross multiply
    42,853.09x = 64,287.47 × 13,268.92
  4. Step 4: Simplify right side
    42,853.09x = 853,025,230.09
  5. Step 5: Solve for x
    x = 853,025,230.09/42,853.09
  6. Step 6: Final answer
    x = 19,905.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.