Home / 21,969,877.80-32,954,816.70-12,989,807.40

Finding the Fourth Proportional to 21,969,877.80, 32,954,816.70 and 12,989,807.40

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Solution

The fourth proportional to 21,969,877.80, 32,954,816.70 and 12,989,807.40 is: 19,484,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969,877.80 : 32,954,816.70 = 12,989,807.40 : x
  2. Step 2: Convert to fraction form
    21,969,877.80/32,954,816.70 = 12,989,807.40/x
  3. Step 3: Cross multiply
    21,969,877.80x = 32,954,816.70 × 12,989,807.40
  4. Step 4: Simplify right side
    21,969,877.80x = 428,076,721,835,303.56
  5. Step 5: Solve for x
    x = 428,076,721,835,303.56/21,969,877.80
  6. Step 6: Final answer
    x = 19,484,711.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.