Home / 13,373.94-18,455.90-7,405.46

Finding the Fourth Proportional to 13,373.94, 18,455.90 and 7,405.46

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Solution

The fourth proportional to 13,373.94, 18,455.90 and 7,405.46 is: 10,219.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,373.94 : 18,455.90 = 7,405.46 : x
  2. Step 2: Convert to fraction form
    13,373.94/18,455.90 = 7,405.46/x
  3. Step 3: Cross multiply
    13,373.94x = 18,455.90 × 7,405.46
  4. Step 4: Simplify right side
    13,373.94x = 136,674,299.91
  5. Step 5: Solve for x
    x = 136,674,299.91/13,373.94
  6. Step 6: Final answer
    x = 10,219.45

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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.