Home / 15,420.29-21,277.53-8,704.35

Finding the Fourth Proportional to 15,420.29, 21,277.53 and 8,704.35

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Solution

The fourth proportional to 15,420.29, 21,277.53 and 8,704.35 is: 12,010.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.29 : 21,277.53 = 8,704.35 : x
  2. Step 2: Convert to fraction form
    15,420.29/21,277.53 = 8,704.35/x
  3. Step 3: Cross multiply
    15,420.29x = 21,277.53 × 8,704.35
  4. Step 4: Simplify right side
    15,420.29x = 185,207,068.26
  5. Step 5: Solve for x
    x = 185,207,068.26/15,420.29
  6. Step 6: Final answer
    x = 12,010.61

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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.