Home / 21,780,888.48-30,056,485.14-11,989,420.21

Finding the Fourth Proportional to 21,780,888.48, 30,056,485.14 and 11,989,420.21

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Solution

The fourth proportional to 21,780,888.48, 30,056,485.14 and 11,989,420.21 is: 16,544,771.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,888.48 : 30,056,485.14 = 11,989,420.21 : x
  2. Step 2: Convert to fraction form
    21,780,888.48/30,056,485.14 = 11,989,420.21/x
  3. Step 3: Cross multiply
    21,780,888.48x = 30,056,485.14 × 11,989,420.21
  4. Step 4: Simplify right side
    21,780,888.48x = 360,359,830,365,858.69
  5. Step 5: Solve for x
    x = 360,359,830,365,858.69/21,780,888.48
  6. Step 6: Final answer
    x = 16,544,771.84

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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.