Home / 13,498.84-18,617.86-8,784.64

Finding the Fourth Proportional to 13,498.84, 18,617.86 and 8,784.64

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Solution

The fourth proportional to 13,498.84, 18,617.86 and 8,784.64 is: 12,115.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,498.84 : 18,617.86 = 8,784.64 : x
  2. Step 2: Convert to fraction form
    13,498.84/18,617.86 = 8,784.64/x
  3. Step 3: Cross multiply
    13,498.84x = 18,617.86 × 8,784.64
  4. Step 4: Simplify right side
    13,498.84x = 163,551,197.67
  5. Step 5: Solve for x
    x = 163,551,197.67/13,498.84
  6. Step 6: Final answer
    x = 12,115.94

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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.