Home / 23,057.18-31,818.57-12,985.64

Finding the Fourth Proportional to 23,057.18, 31,818.57 and 12,985.64

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Solution

The fourth proportional to 23,057.18, 31,818.57 and 12,985.64 is: 17,919.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,057.18 : 31,818.57 = 12,985.64 : x
  2. Step 2: Convert to fraction form
    23,057.18/31,818.57 = 12,985.64/x
  3. Step 3: Cross multiply
    23,057.18x = 31,818.57 × 12,985.64
  4. Step 4: Simplify right side
    23,057.18x = 413,184,495.33
  5. Step 5: Solve for x
    x = 413,184,495.33/23,057.18
  6. Step 6: Final answer
    x = 17,919.99

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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.