Home / 13,630.88-20,455.74-8,953.13

Finding the Fourth Proportional to 13,630.88, 20,455.74 and 8,953.13

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Solution

The fourth proportional to 13,630.88, 20,455.74 and 8,953.13 is: 13,435.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.88 : 20,455.74 = 8,953.13 : x
  2. Step 2: Convert to fraction form
    13,630.88/20,455.74 = 8,953.13/x
  3. Step 3: Cross multiply
    13,630.88x = 20,455.74 × 8,953.13
  4. Step 4: Simplify right side
    13,630.88x = 183,142,950.61
  5. Step 5: Solve for x
    x = 183,142,950.61/13,630.88
  6. Step 6: Final answer
    x = 13,435.88

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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.