Home / 15,675.21-21,632.13-8,602.11

Finding the Fourth Proportional to 15,675.21, 21,632.13 and 8,602.11

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Solution

The fourth proportional to 15,675.21, 21,632.13 and 8,602.11 is: 11,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,675.21 : 21,632.13 = 8,602.11 : x
  2. Step 2: Convert to fraction form
    15,675.21/21,632.13 = 8,602.11/x
  3. Step 3: Cross multiply
    15,675.21x = 21,632.13 × 8,602.11
  4. Step 4: Simplify right side
    15,675.21x = 186,081,961.79
  5. Step 5: Solve for x
    x = 186,081,961.79/15,675.21
  6. Step 6: Final answer
    x = 11,871.10

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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.