Home / 15,101.08-20,838.30-8,386.06

Finding the Fourth Proportional to 15,101.08, 20,838.30 and 8,386.06

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Solution

The fourth proportional to 15,101.08, 20,838.30 and 8,386.06 is: 11,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.08 : 20,838.30 = 8,386.06 : x
  2. Step 2: Convert to fraction form
    15,101.08/20,838.30 = 8,386.06/x
  3. Step 3: Cross multiply
    15,101.08x = 20,838.30 × 8,386.06
  4. Step 4: Simplify right side
    15,101.08x = 174,751,234.10
  5. Step 5: Solve for x
    x = 174,751,234.10/15,101.08
  6. Step 6: Final answer
    x = 11,572.10

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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.