Home / 20,712,106.46-31,136,268.95-19,213,876.60

Finding the Fourth Proportional to 20,712,106.46, 31,136,268.95 and 19,213,876.60

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Solution

The fourth proportional to 20,712,106.46, 31,136,268.95 and 19,213,876.60 is: 28,883,997.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,106.46 : 31,136,268.95 = 19,213,876.60 : x
  2. Step 2: Convert to fraction form
    20,712,106.46/31,136,268.95 = 19,213,876.60/x
  3. Step 3: Cross multiply
    20,712,106.46x = 31,136,268.95 × 19,213,876.60
  4. Step 4: Simplify right side
    20,712,106.46x = 598,248,429,137,960.75
  5. Step 5: Solve for x
    x = 598,248,429,137,960.75/20,712,106.46
  6. Step 6: Final answer
    x = 28,883,997.40

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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.