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Finding the Fourth Proportional to 13,586.46, 18,750.88 and 9,048.90

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Solution

The fourth proportional to 13,586.46, 18,750.88 and 9,048.90 is: 12,488.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.46 : 18,750.88 = 9,048.90 : x
  2. Step 2: Convert to fraction form
    13,586.46/18,750.88 = 9,048.90/x
  3. Step 3: Cross multiply
    13,586.46x = 18,750.88 × 9,048.90
  4. Step 4: Simplify right side
    13,586.46x = 169,674,772.56
  5. Step 5: Solve for x
    x = 169,674,772.56/13,586.46
  6. Step 6: Final answer
    x = 12,488.52

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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.