Home / 13,830.56-19,086.40-7,543.28

Finding the Fourth Proportional to 13,830.56, 19,086.40 and 7,543.28

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Solution

The fourth proportional to 13,830.56, 19,086.40 and 7,543.28 is: 10,409.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.56 : 19,086.40 = 7,543.28 : x
  2. Step 2: Convert to fraction form
    13,830.56/19,086.40 = 7,543.28/x
  3. Step 3: Cross multiply
    13,830.56x = 19,086.40 × 7,543.28
  4. Step 4: Simplify right side
    13,830.56x = 143,974,059.39
  5. Step 5: Solve for x
    x = 143,974,059.39/13,830.56
  6. Step 6: Final answer
    x = 10,409.85

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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.