Home / 15,538.48-21,443.07-8,464.89

Finding the Fourth Proportional to 15,538.48, 21,443.07 and 8,464.89

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Solution

The fourth proportional to 15,538.48, 21,443.07 and 8,464.89 is: 11,681.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.48 : 21,443.07 = 8,464.89 : x
  2. Step 2: Convert to fraction form
    15,538.48/21,443.07 = 8,464.89/x
  3. Step 3: Cross multiply
    15,538.48x = 21,443.07 × 8,464.89
  4. Step 4: Simplify right side
    15,538.48x = 181,513,121.60
  5. Step 5: Solve for x
    x = 181,513,121.60/15,538.48
  6. Step 6: Final answer
    x = 11,681.52

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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.