Home / 15,635.19-21,570.39-9,656.37

Finding the Fourth Proportional to 15,635.19, 21,570.39 and 9,656.37

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Solution

The fourth proportional to 15,635.19, 21,570.39 and 9,656.37 is: 13,321.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,635.19 : 21,570.39 = 9,656.37 : x
  2. Step 2: Convert to fraction form
    15,635.19/21,570.39 = 9,656.37/x
  3. Step 3: Cross multiply
    15,635.19x = 21,570.39 × 9,656.37
  4. Step 4: Simplify right side
    15,635.19x = 208,291,666.88
  5. Step 5: Solve for x
    x = 208,291,666.88/15,635.19
  6. Step 6: Final answer
    x = 13,321.98

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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.