Home / 28,120.34-42,186.79-10,590.32

Finding the Fourth Proportional to 28,120.34, 42,186.79 and 10,590.32

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Solution

The fourth proportional to 28,120.34, 42,186.79 and 10,590.32 is: 15,887.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.34 : 42,186.79 = 10,590.32 : x
  2. Step 2: Convert to fraction form
    28,120.34/42,186.79 = 10,590.32/x
  3. Step 3: Cross multiply
    28,120.34x = 42,186.79 × 10,590.32
  4. Step 4: Simplify right side
    28,120.34x = 446,771,605.87
  5. Step 5: Solve for x
    x = 446,771,605.87/28,120.34
  6. Step 6: Final answer
    x = 15,887.85

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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.