Home / 13,284.39-19,938.87-6,715.20

Finding the Fourth Proportional to 13,284.39, 19,938.87 and 6,715.20

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Solution

The fourth proportional to 13,284.39, 19,938.87 and 6,715.20 is: 10,079.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,284.39 : 19,938.87 = 6,715.20 : x
  2. Step 2: Convert to fraction form
    13,284.39/19,938.87 = 6,715.20/x
  3. Step 3: Cross multiply
    13,284.39x = 19,938.87 × 6,715.20
  4. Step 4: Simplify right side
    13,284.39x = 133,893,499.82
  5. Step 5: Solve for x
    x = 133,893,499.82/13,284.39
  6. Step 6: Final answer
    x = 10,079.01

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1.5x scale

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.