Home / 21,276,938.40-31,919,891.40-6,898,885.20

Finding the Fourth Proportional to 21,276,938.40, 31,919,891.40 and 6,898,885.20

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Solution

The fourth proportional to 21,276,938.40, 31,919,891.40 and 6,898,885.20 is: 10,349,781.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276,938.40 : 31,919,891.40 = 6,898,885.20 : x
  2. Step 2: Convert to fraction form
    21,276,938.40/31,919,891.40 = 6,898,885.20/x
  3. Step 3: Cross multiply
    21,276,938.40x = 31,919,891.40 × 6,898,885.20
  4. Step 4: Simplify right side
    21,276,938.40x = 220,211,666,365,067.28
  5. Step 5: Solve for x
    x = 220,211,666,365,067.28/21,276,938.40
  6. Step 6: Final answer
    x = 10,349,781.64

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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.