Home / 28,111.04-42,165.76-8,389.76

Finding the Fourth Proportional to 28,111.04, 42,165.76 and 8,389.76

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Solution

The fourth proportional to 28,111.04, 42,165.76 and 8,389.76 is: 12,584.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.04 : 42,165.76 = 8,389.76 : x
  2. Step 2: Convert to fraction form
    28,111.04/42,165.76 = 8,389.76/x
  3. Step 3: Cross multiply
    28,111.04x = 42,165.76 × 8,389.76
  4. Step 4: Simplify right side
    28,111.04x = 353,760,606.62
  5. Step 5: Solve for x
    x = 353,760,606.62/28,111.04
  6. Step 6: Final answer
    x = 12,584.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.