Home / 15,300.40-21,113.94-8,587.48

Finding the Fourth Proportional to 15,300.40, 21,113.94 and 8,587.48

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Solution

The fourth proportional to 15,300.40, 21,113.94 and 8,587.48 is: 11,850.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,300.40 : 21,113.94 = 8,587.48 : x
  2. Step 2: Convert to fraction form
    15,300.40/21,113.94 = 8,587.48/x
  3. Step 3: Cross multiply
    15,300.40x = 21,113.94 × 8,587.48
  4. Step 4: Simplify right side
    15,300.40x = 181,315,537.47
  5. Step 5: Solve for x
    x = 181,315,537.47/15,300.40
  6. Step 6: Final answer
    x = 11,850.38

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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.