Home / 13,830.70-19,086.50-7,543.08

Finding the Fourth Proportional to 13,830.70, 19,086.50 and 7,543.08

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Solution

The fourth proportional to 13,830.70, 19,086.50 and 7,543.08 is: 10,409.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.70 : 19,086.50 = 7,543.08 : x
  2. Step 2: Convert to fraction form
    13,830.70/19,086.50 = 7,543.08/x
  3. Step 3: Cross multiply
    13,830.70x = 19,086.50 × 7,543.08
  4. Step 4: Simplify right side
    13,830.70x = 143,970,996.42
  5. Step 5: Solve for x
    x = 143,970,996.42/13,830.70
  6. Step 6: Final answer
    x = 10,409.52

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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.