Home / 21,095.08-29,111.12-11,663.60

Finding the Fourth Proportional to 21,095.08, 29,111.12 and 11,663.60

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Solution

The fourth proportional to 21,095.08, 29,111.12 and 11,663.60 is: 16,095.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.08 : 29,111.12 = 11,663.60 : x
  2. Step 2: Convert to fraction form
    21,095.08/29,111.12 = 11,663.60/x
  3. Step 3: Cross multiply
    21,095.08x = 29,111.12 × 11,663.60
  4. Step 4: Simplify right side
    21,095.08x = 339,540,459.23
  5. Step 5: Solve for x
    x = 339,540,459.23/21,095.08
  6. Step 6: Final answer
    x = 16,095.72

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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.