Home / 21,056,809.03-31,494,032.02-12,400,274.83

Finding the Fourth Proportional to 21,056,809.03, 31,494,032.02 and 12,400,274.83

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Solution

The fourth proportional to 21,056,809.03, 31,494,032.02 and 12,400,274.83 is: 18,546,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056,809.03 : 31,494,032.02 = 12,400,274.83 : x
  2. Step 2: Convert to fraction form
    21,056,809.03/31,494,032.02 = 12,400,274.83/x
  3. Step 3: Cross multiply
    21,056,809.03x = 31,494,032.02 × 12,400,274.83
  4. Step 4: Simplify right side
    21,056,809.03x = 390,534,652,490,818.69
  5. Step 5: Solve for x
    x = 390,534,652,490,818.69/21,056,809.03
  6. Step 6: Final answer
    x = 18,546,715.79

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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.