Home / 21,809,009.89-30,101,562.28-13,555,305.60

Finding the Fourth Proportional to 21,809,009.89, 30,101,562.28 and 13,555,305.60

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Solution

The fourth proportional to 21,809,009.89, 30,101,562.28 and 13,555,305.60 is: 18,709,509.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,809,009.89 : 30,101,562.28 = 13,555,305.60 : x
  2. Step 2: Convert to fraction form
    21,809,009.89/30,101,562.28 = 13,555,305.60/x
  3. Step 3: Cross multiply
    21,809,009.89x = 30,101,562.28 × 13,555,305.60
  4. Step 4: Simplify right side
    21,809,009.89x = 408,035,875,739,968.75
  5. Step 5: Solve for x
    x = 408,035,875,739,968.75/21,809,009.89
  6. Step 6: Final answer
    x = 18,709,509.41

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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.