Home / 15,371.07-21,212.49-8,656.93

Finding the Fourth Proportional to 15,371.07, 21,212.49 and 8,656.93

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Solution

The fourth proportional to 15,371.07, 21,212.49 and 8,656.93 is: 11,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.07 : 21,212.49 = 8,656.93 : x
  2. Step 2: Convert to fraction form
    15,371.07/21,212.49 = 8,656.93/x
  3. Step 3: Cross multiply
    15,371.07x = 21,212.49 × 8,656.93
  4. Step 4: Simplify right side
    15,371.07x = 183,635,041.06
  5. Step 5: Solve for x
    x = 183,635,041.06/15,371.07
  6. Step 6: Final answer
    x = 11,946.80

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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.