Home / 15,554.45-21,465.13-8,840.09

Finding the Fourth Proportional to 15,554.45, 21,465.13 and 8,840.09

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Solution

The fourth proportional to 15,554.45, 21,465.13 and 8,840.09 is: 12,199.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554.45 : 21,465.13 = 8,840.09 : x
  2. Step 2: Convert to fraction form
    15,554.45/21,465.13 = 8,840.09/x
  3. Step 3: Cross multiply
    15,554.45x = 21,465.13 × 8,840.09
  4. Step 4: Simplify right side
    15,554.45x = 189,753,681.06
  5. Step 5: Solve for x
    x = 189,753,681.06/15,554.45
  6. Step 6: Final answer
    x = 12,199.32

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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.