Home / 15,855.09-21,874.40-9,477.25

Finding the Fourth Proportional to 15,855.09, 21,874.40 and 9,477.25

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Solution

The fourth proportional to 15,855.09, 21,874.40 and 9,477.25 is: 13,075.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,855.09 : 21,874.40 = 9,477.25 : x
  2. Step 2: Convert to fraction form
    15,855.09/21,874.40 = 9,477.25/x
  3. Step 3: Cross multiply
    15,855.09x = 21,874.40 × 9,477.25
  4. Step 4: Simplify right side
    15,855.09x = 207,309,267.22
  5. Step 5: Solve for x
    x = 207,309,267.22/15,855.09
  6. Step 6: Final answer
    x = 13,075.25

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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.