Home / 13,563.01-18,725.66-9,312.70

Finding the Fourth Proportional to 13,563.01, 18,725.66 and 9,312.70

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Solution

The fourth proportional to 13,563.01, 18,725.66 and 9,312.70 is: 12,857.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.01 : 18,725.66 = 9,312.70 : x
  2. Step 2: Convert to fraction form
    13,563.01/18,725.66 = 9,312.70/x
  3. Step 3: Cross multiply
    13,563.01x = 18,725.66 × 9,312.70
  4. Step 4: Simplify right side
    13,563.01x = 174,386,453.88
  5. Step 5: Solve for x
    x = 174,386,453.88/13,563.01
  6. Step 6: Final answer
    x = 12,857.50

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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.