Home / 15,703.13-21,669.52-8,628.19

Finding the Fourth Proportional to 15,703.13, 21,669.52 and 8,628.19

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Solution

The fourth proportional to 15,703.13, 21,669.52 and 8,628.19 is: 11,906.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,703.13 : 21,669.52 = 8,628.19 : x
  2. Step 2: Convert to fraction form
    15,703.13/21,669.52 = 8,628.19/x
  3. Step 3: Cross multiply
    15,703.13x = 21,669.52 × 8,628.19
  4. Step 4: Simplify right side
    15,703.13x = 186,968,584.28
  5. Step 5: Solve for x
    x = 186,968,584.28/15,703.13
  6. Step 6: Final answer
    x = 11,906.45

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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.