Home / 15,386.19-21,232.44-9,723.98

Finding the Fourth Proportional to 15,386.19, 21,232.44 and 9,723.98

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Solution

The fourth proportional to 15,386.19, 21,232.44 and 9,723.98 is: 13,418.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.19 : 21,232.44 = 9,723.98 : x
  2. Step 2: Convert to fraction form
    15,386.19/21,232.44 = 9,723.98/x
  3. Step 3: Cross multiply
    15,386.19x = 21,232.44 × 9,723.98
  4. Step 4: Simplify right side
    15,386.19x = 206,463,715.75
  5. Step 5: Solve for x
    x = 206,463,715.75/15,386.19
  6. Step 6: Final answer
    x = 13,418.77

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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.