Home / 15,726.21-21,698.60-11,479.58

Finding the Fourth Proportional to 15,726.21, 21,698.60 and 11,479.58

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Solution

The fourth proportional to 15,726.21, 21,698.60 and 11,479.58 is: 15,839.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.21 : 21,698.60 = 11,479.58 : x
  2. Step 2: Convert to fraction form
    15,726.21/21,698.60 = 11,479.58/x
  3. Step 3: Cross multiply
    15,726.21x = 21,698.60 × 11,479.58
  4. Step 4: Simplify right side
    15,726.21x = 249,090,757.19
  5. Step 5: Solve for x
    x = 249,090,757.19/15,726.21
  6. Step 6: Final answer
    x = 15,839.22

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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.