Home / 15,406.92-21,240.90-10,099.80

Finding the Fourth Proportional to 15,406.92, 21,240.90 and 10,099.80

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Solution

The fourth proportional to 15,406.92, 21,240.90 and 10,099.80 is: 13,924.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,406.92 : 21,240.90 = 10,099.80 : x
  2. Step 2: Convert to fraction form
    15,406.92/21,240.90 = 10,099.80/x
  3. Step 3: Cross multiply
    15,406.92x = 21,240.90 × 10,099.80
  4. Step 4: Simplify right side
    15,406.92x = 214,528,841.82
  5. Step 5: Solve for x
    x = 214,528,841.82/15,406.92
  6. Step 6: Final answer
    x = 13,924.19

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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.