Home / 21,066,489.78-31,599,734.30-5,920,421.28

Finding the Fourth Proportional to 21,066,489.78, 31,599,734.30 and 5,920,421.28

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Solution

The fourth proportional to 21,066,489.78, 31,599,734.30 and 5,920,421.28 is: 8,880,631.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066,489.78 : 31,599,734.30 = 5,920,421.28 : x
  2. Step 2: Convert to fraction form
    21,066,489.78/31,599,734.30 = 5,920,421.28/x
  3. Step 3: Cross multiply
    21,066,489.78x = 31,599,734.30 × 5,920,421.28
  4. Step 4: Simplify right side
    21,066,489.78x = 187,083,739,362,463.81
  5. Step 5: Solve for x
    x = 187,083,739,362,463.81/21,066,489.78
  6. Step 6: Final answer
    x = 8,880,631.81

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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.