Home / 15,579.77-21,501.62-9,208.46

Finding the Fourth Proportional to 15,579.77, 21,501.62 and 9,208.46

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Solution

The fourth proportional to 15,579.77, 21,501.62 and 9,208.46 is: 12,708.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.77 : 21,501.62 = 9,208.46 : x
  2. Step 2: Convert to fraction form
    15,579.77/21,501.62 = 9,208.46/x
  3. Step 3: Cross multiply
    15,579.77x = 21,501.62 × 9,208.46
  4. Step 4: Simplify right side
    15,579.77x = 197,996,654.15
  5. Step 5: Solve for x
    x = 197,996,654.15/15,579.77
  6. Step 6: Final answer
    x = 12,708.58

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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.