Home / 20,090.10-27,718.85-12,537.65

Finding the Fourth Proportional to 20,090.10, 27,718.85 and 12,537.65

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Solution

The fourth proportional to 20,090.10, 27,718.85 and 12,537.65 is: 17,298.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.10 : 27,718.85 = 12,537.65 : x
  2. Step 2: Convert to fraction form
    20,090.10/27,718.85 = 12,537.65/x
  3. Step 3: Cross multiply
    20,090.10x = 27,718.85 × 12,537.65
  4. Step 4: Simplify right side
    20,090.10x = 347,529,038.42
  5. Step 5: Solve for x
    x = 347,529,038.42/20,090.10
  6. Step 6: Final answer
    x = 17,298.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.