Home / 13,990.69-20,985.35-5,224.92

Finding the Fourth Proportional to 13,990.69, 20,985.35 and 5,224.92

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Solution

The fourth proportional to 13,990.69, 20,985.35 and 5,224.92 is: 7,837.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.69 : 20,985.35 = 5,224.92 : x
  2. Step 2: Convert to fraction form
    13,990.69/20,985.35 = 5,224.92/x
  3. Step 3: Cross multiply
    13,990.69x = 20,985.35 × 5,224.92
  4. Step 4: Simplify right side
    13,990.69x = 109,646,832.23
  5. Step 5: Solve for x
    x = 109,646,832.23/13,990.69
  6. Step 6: Final answer
    x = 7,837.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.