Home / 13,699.50-18,905.45-7,412.01

Finding the Fourth Proportional to 13,699.50, 18,905.45 and 7,412.01

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Solution

The fourth proportional to 13,699.50, 18,905.45 and 7,412.01 is: 10,228.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.50 : 18,905.45 = 7,412.01 : x
  2. Step 2: Convert to fraction form
    13,699.50/18,905.45 = 7,412.01/x
  3. Step 3: Cross multiply
    13,699.50x = 18,905.45 × 7,412.01
  4. Step 4: Simplify right side
    13,699.50x = 140,127,347.39
  5. Step 5: Solve for x
    x = 140,127,347.39/13,699.50
  6. Step 6: Final answer
    x = 10,228.65

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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.