Home / 31,620,009.60-47,447,729.10-13,421,107.80

Finding the Fourth Proportional to 31,620,009.60, 47,447,729.10 and 13,421,107.80

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Solution

The fourth proportional to 31,620,009.60, 47,447,729.10 and 13,421,107.80 is: 20,139,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,620,009.60 : 47,447,729.10 = 13,421,107.80 : x
  2. Step 2: Convert to fraction form
    31,620,009.60/47,447,729.10 = 13,421,107.80/x
  3. Step 3: Cross multiply
    31,620,009.60x = 47,447,729.10 × 13,421,107.80
  4. Step 4: Simplify right side
    31,620,009.60x = 636,801,087,116,297
  5. Step 5: Solve for x
    x = 636,801,087,116,297/31,620,009.60
  6. Step 6: Final answer
    x = 20,139,180.70

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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.