Home / 13,121,193.48-18,107,254.79-7,319,975.21

Finding the Fourth Proportional to 13,121,193.48, 18,107,254.79 and 7,319,975.21

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Solution

The fourth proportional to 13,121,193.48, 18,107,254.79 and 7,319,975.21 is: 10,101,570.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,193.48 : 18,107,254.79 = 7,319,975.21 : x
  2. Step 2: Convert to fraction form
    13,121,193.48/18,107,254.79 = 7,319,975.21/x
  3. Step 3: Cross multiply
    13,121,193.48x = 18,107,254.79 × 7,319,975.21
  4. Step 4: Simplify right side
    13,121,193.48x = 132,544,656,056,817.61
  5. Step 5: Solve for x
    x = 132,544,656,056,817.61/13,121,193.48
  6. Step 6: Final answer
    x = 10,101,570.12

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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.