Home / 15,536.25-21,421.48-12,693.15

Finding the Fourth Proportional to 15,536.25, 21,421.48 and 12,693.15

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Solution

The fourth proportional to 15,536.25, 21,421.48 and 12,693.15 is: 17,501.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,536.25 : 21,421.48 = 12,693.15 : x
  2. Step 2: Convert to fraction form
    15,536.25/21,421.48 = 12,693.15/x
  3. Step 3: Cross multiply
    15,536.25x = 21,421.48 × 12,693.15
  4. Step 4: Simplify right side
    15,536.25x = 271,906,058.86
  5. Step 5: Solve for x
    x = 271,906,058.86/15,536.25
  6. Step 6: Final answer
    x = 17,501.40

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Half scale
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Double scale
Find fourth proportional to 15,537.25, 21,422.86 and 12,694.15
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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.