Home / 21,061,371.20-31,592,056.80-18,457,966.40

Finding the Fourth Proportional to 21,061,371.20, 31,592,056.80 and 18,457,966.40

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Solution

The fourth proportional to 21,061,371.20, 31,592,056.80 and 18,457,966.40 is: 27,686,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061,371.20 : 31,592,056.80 = 18,457,966.40 : x
  2. Step 2: Convert to fraction form
    21,061,371.20/31,592,056.80 = 18,457,966.40/x
  3. Step 3: Cross multiply
    21,061,371.20x = 31,592,056.80 × 18,457,966.40
  4. Step 4: Simplify right side
    21,061,371.20x = 583,125,122,921,291.50
  5. Step 5: Solve for x
    x = 583,125,122,921,291.50/21,061,371.20
  6. Step 6: Final answer
    x = 27,686,949.60

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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.