Home / 15,369.29-21,211.22-9,404.93

Finding the Fourth Proportional to 15,369.29, 21,211.22 and 9,404.93

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Solution

The fourth proportional to 15,369.29, 21,211.22 and 9,404.93 is: 12,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.29 : 21,211.22 = 9,404.93 : x
  2. Step 2: Convert to fraction form
    15,369.29/21,211.22 = 9,404.93/x
  3. Step 3: Cross multiply
    15,369.29x = 21,211.22 × 9,404.93
  4. Step 4: Simplify right side
    15,369.29x = 199,489,886.23
  5. Step 5: Solve for x
    x = 199,489,886.23/15,369.29
  6. Step 6: Final answer
    x = 12,979.77

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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.