Home / 15,461.22-21,328.50-9,786.36

Finding the Fourth Proportional to 15,461.22, 21,328.50 and 9,786.36

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Solution

The fourth proportional to 15,461.22, 21,328.50 and 9,786.36 is: 13,500.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.22 : 21,328.50 = 9,786.36 : x
  2. Step 2: Convert to fraction form
    15,461.22/21,328.50 = 9,786.36/x
  3. Step 3: Cross multiply
    15,461.22x = 21,328.50 × 9,786.36
  4. Step 4: Simplify right side
    15,461.22x = 208,728,379.26
  5. Step 5: Solve for x
    x = 208,728,379.26/15,461.22
  6. Step 6: Final answer
    x = 13,500.12

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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.