Home / 15,579.36-21,497.67-9,290.52

Finding the Fourth Proportional to 15,579.36, 21,497.67 and 9,290.52

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Solution

The fourth proportional to 15,579.36, 21,497.67 and 9,290.52 is: 12,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.36 : 21,497.67 = 9,290.52 : x
  2. Step 2: Convert to fraction form
    15,579.36/21,497.67 = 9,290.52/x
  3. Step 3: Cross multiply
    15,579.36x = 21,497.67 × 9,290.52
  4. Step 4: Simplify right side
    15,579.36x = 199,724,533.09
  5. Step 5: Solve for x
    x = 199,724,533.09/15,579.36
  6. Step 6: Final answer
    x = 12,819.82

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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.