Home / 13,491.84-18,624.80-9,900.45

Finding the Fourth Proportional to 13,491.84, 18,624.80 and 9,900.45

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Solution

The fourth proportional to 13,491.84, 18,624.80 and 9,900.45 is: 13,667.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.84 : 18,624.80 = 9,900.45 : x
  2. Step 2: Convert to fraction form
    13,491.84/18,624.80 = 9,900.45/x
  3. Step 3: Cross multiply
    13,491.84x = 18,624.80 × 9,900.45
  4. Step 4: Simplify right side
    13,491.84x = 184,393,901.16
  5. Step 5: Solve for x
    x = 184,393,901.16/13,491.84
  6. Step 6: Final answer
    x = 13,667.07

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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.