Home / 23,130.42-31,919.96-12,520.04

Finding the Fourth Proportional to 23,130.42, 31,919.96 and 12,520.04

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Solution

The fourth proportional to 23,130.42, 31,919.96 and 12,520.04 is: 17,277.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,130.42 : 31,919.96 = 12,520.04 : x
  2. Step 2: Convert to fraction form
    23,130.42/31,919.96 = 12,520.04/x
  3. Step 3: Cross multiply
    23,130.42x = 31,919.96 × 12,520.04
  4. Step 4: Simplify right side
    23,130.42x = 399,638,953.80
  5. Step 5: Solve for x
    x = 399,638,953.80/23,130.42
  6. Step 6: Final answer
    x = 17,277.63

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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.