Home / 15,648.30-21,587.41-13,857.60

Finding the Fourth Proportional to 15,648.30, 21,587.41 and 13,857.60

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Solution

The fourth proportional to 15,648.30, 21,587.41 and 13,857.60 is: 19,117.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,648.30 : 21,587.41 = 13,857.60 : x
  2. Step 2: Convert to fraction form
    15,648.30/21,587.41 = 13,857.60/x
  3. Step 3: Cross multiply
    15,648.30x = 21,587.41 × 13,857.60
  4. Step 4: Simplify right side
    15,648.30x = 299,149,658.17
  5. Step 5: Solve for x
    x = 299,149,658.17/15,648.30
  6. Step 6: Final answer
    x = 19,117.07

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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.