Home / 28,119.36-42,186.08-8,397.84

Finding the Fourth Proportional to 28,119.36, 42,186.08 and 8,397.84

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Solution

The fourth proportional to 28,119.36, 42,186.08 and 8,397.84 is: 12,598.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.36 : 42,186.08 = 8,397.84 : x
  2. Step 2: Convert to fraction form
    28,119.36/42,186.08 = 8,397.84/x
  3. Step 3: Cross multiply
    28,119.36x = 42,186.08 × 8,397.84
  4. Step 4: Simplify right side
    28,119.36x = 354,271,950.07
  5. Step 5: Solve for x
    x = 354,271,950.07/28,119.36
  6. Step 6: Final answer
    x = 12,598.86

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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.