Home / 15,036.03-20,749.23-8,321.40

Finding the Fourth Proportional to 15,036.03, 20,749.23 and 8,321.40

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Solution

The fourth proportional to 15,036.03, 20,749.23 and 8,321.40 is: 11,483.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,036.03 : 20,749.23 = 8,321.40 : x
  2. Step 2: Convert to fraction form
    15,036.03/20,749.23 = 8,321.40/x
  3. Step 3: Cross multiply
    15,036.03x = 20,749.23 × 8,321.40
  4. Step 4: Simplify right side
    15,036.03x = 172,662,642.52
  5. Step 5: Solve for x
    x = 172,662,642.52/15,036.03
  6. Step 6: Final answer
    x = 11,483.26

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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.