Home / 28,507.11-42,770.85-12,710.72

Finding the Fourth Proportional to 28,507.11, 42,770.85 and 12,710.72

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Solution

The fourth proportional to 28,507.11, 42,770.85 and 12,710.72 is: 19,070.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.11 : 42,770.85 = 12,710.72 : x
  2. Step 2: Convert to fraction form
    28,507.11/42,770.85 = 12,710.72/x
  3. Step 3: Cross multiply
    28,507.11x = 42,770.85 × 12,710.72
  4. Step 4: Simplify right side
    28,507.11x = 543,648,485.63
  5. Step 5: Solve for x
    x = 543,648,485.63/28,507.11
  6. Step 6: Final answer
    x = 19,070.63

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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.