Home / 15,619.77-21,555.41-9,650.07

Finding the Fourth Proportional to 15,619.77, 21,555.41 and 9,650.07

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Solution

The fourth proportional to 15,619.77, 21,555.41 and 9,650.07 is: 13,317.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.77 : 21,555.41 = 9,650.07 : x
  2. Step 2: Convert to fraction form
    15,619.77/21,555.41 = 9,650.07/x
  3. Step 3: Cross multiply
    15,619.77x = 21,555.41 × 9,650.07
  4. Step 4: Simplify right side
    15,619.77x = 208,011,167.13
  5. Step 5: Solve for x
    x = 208,011,167.13/15,619.77
  6. Step 6: Final answer
    x = 13,317.17

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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.