Home / 15,698.60-21,611.16-13,603.13

Finding the Fourth Proportional to 15,698.60, 21,611.16 and 13,603.13

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Solution

The fourth proportional to 15,698.60, 21,611.16 and 13,603.13 is: 18,726.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,698.60 : 21,611.16 = 13,603.13 : x
  2. Step 2: Convert to fraction form
    15,698.60/21,611.16 = 13,603.13/x
  3. Step 3: Cross multiply
    15,698.60x = 21,611.16 × 13,603.13
  4. Step 4: Simplify right side
    15,698.60x = 293,979,418.93
  5. Step 5: Solve for x
    x = 293,979,418.93/15,698.60
  6. Step 6: Final answer
    x = 18,726.47

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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.