Home / 15,099.64-20,857.56-12,590.08

Finding the Fourth Proportional to 15,099.64, 20,857.56 and 12,590.08

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Solution

The fourth proportional to 15,099.64, 20,857.56 and 12,590.08 is: 17,391.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,099.64 : 20,857.56 = 12,590.08 : x
  2. Step 2: Convert to fraction form
    15,099.64/20,857.56 = 12,590.08/x
  3. Step 3: Cross multiply
    15,099.64x = 20,857.56 × 12,590.08
  4. Step 4: Simplify right side
    15,099.64x = 262,598,349.00
  5. Step 5: Solve for x
    x = 262,598,349.00/15,099.64
  6. Step 6: Final answer
    x = 17,391.03

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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.