Home / 21,217,729.20-31,799,831.40-9,072,835.44

Finding the Fourth Proportional to 21,217,729.20, 31,799,831.40 and 9,072,835.44

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Solution

The fourth proportional to 21,217,729.20, 31,799,831.40 and 9,072,835.44 is: 13,597,809.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217,729.20 : 31,799,831.40 = 9,072,835.44 : x
  2. Step 2: Convert to fraction form
    21,217,729.20/31,799,831.40 = 9,072,835.44/x
  3. Step 3: Cross multiply
    21,217,729.20x = 31,799,831.40 × 9,072,835.44
  4. Step 4: Simplify right side
    21,217,729.20x = 288,514,637,311,944.81
  5. Step 5: Solve for x
    x = 288,514,637,311,944.81/21,217,729.20
  6. Step 6: Final answer
    x = 13,597,809.39

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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.