Home / 15,655.36-21,587.52-11,885.44

Finding the Fourth Proportional to 15,655.36, 21,587.52 and 11,885.44

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Solution

The fourth proportional to 15,655.36, 21,587.52 and 11,885.44 is: 16,389.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.36 : 21,587.52 = 11,885.44 : x
  2. Step 2: Convert to fraction form
    15,655.36/21,587.52 = 11,885.44/x
  3. Step 3: Cross multiply
    15,655.36x = 21,587.52 × 11,885.44
  4. Step 4: Simplify right side
    15,655.36x = 256,577,173.71
  5. Step 5: Solve for x
    x = 256,577,173.71/15,655.36
  6. Step 6: Final answer
    x = 16,389.09

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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.