Home / 13,355.13-20,045.70-6,434.49

Finding the Fourth Proportional to 13,355.13, 20,045.70 and 6,434.49

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Solution

The fourth proportional to 13,355.13, 20,045.70 and 6,434.49 is: 9,658.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.13 : 20,045.70 = 6,434.49 : x
  2. Step 2: Convert to fraction form
    13,355.13/20,045.70 = 6,434.49/x
  3. Step 3: Cross multiply
    13,355.13x = 20,045.70 × 6,434.49
  4. Step 4: Simplify right side
    13,355.13x = 128,983,856.19
  5. Step 5: Solve for x
    x = 128,983,856.19/13,355.13
  6. Step 6: Final answer
    x = 9,658.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.