Home / 28,460.99-42,689.79-8,739.72

Finding the Fourth Proportional to 28,460.99, 42,689.79 and 8,739.72

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Solution

The fourth proportional to 28,460.99, 42,689.79 and 8,739.72 is: 13,109.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460.99 : 42,689.79 = 8,739.72 : x
  2. Step 2: Convert to fraction form
    28,460.99/42,689.79 = 8,739.72/x
  3. Step 3: Cross multiply
    28,460.99x = 42,689.79 × 8,739.72
  4. Step 4: Simplify right side
    28,460.99x = 373,096,811.46
  5. Step 5: Solve for x
    x = 373,096,811.46/28,460.99
  6. Step 6: Final answer
    x = 13,109.06

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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.