Home / 15,317.86-21,146.52-13,103.53

Finding the Fourth Proportional to 15,317.86, 21,146.52 and 13,103.53

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Solution

The fourth proportional to 15,317.86, 21,146.52 and 13,103.53 is: 18,089.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.86 : 21,146.52 = 13,103.53 : x
  2. Step 2: Convert to fraction form
    15,317.86/21,146.52 = 13,103.53/x
  3. Step 3: Cross multiply
    15,317.86x = 21,146.52 × 13,103.53
  4. Step 4: Simplify right side
    15,317.86x = 277,094,059.22
  5. Step 5: Solve for x
    x = 277,094,059.22/15,317.86
  6. Step 6: Final answer
    x = 18,089.61

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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.