Home / 15,106.18-20,849.01-8,817.34

Finding the Fourth Proportional to 15,106.18, 20,849.01 and 8,817.34

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Solution

The fourth proportional to 15,106.18, 20,849.01 and 8,817.34 is: 12,169.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.18 : 20,849.01 = 8,817.34 : x
  2. Step 2: Convert to fraction form
    15,106.18/20,849.01 = 8,817.34/x
  3. Step 3: Cross multiply
    15,106.18x = 20,849.01 × 8,817.34
  4. Step 4: Simplify right side
    15,106.18x = 183,832,809.83
  5. Step 5: Solve for x
    x = 183,832,809.83/15,106.18
  6. Step 6: Final answer
    x = 12,169.38

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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.