Home / 19,431,155.20-29,128,070.40-15,110,809.60

Finding the Fourth Proportional to 19,431,155.20, 29,128,070.40 and 15,110,809.60

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Solution

The fourth proportional to 19,431,155.20, 29,128,070.40 and 15,110,809.60 is: 22,651,701.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431,155.20 : 29,128,070.40 = 15,110,809.60 : x
  2. Step 2: Convert to fraction form
    19,431,155.20/29,128,070.40 = 15,110,809.60/x
  3. Step 3: Cross multiply
    19,431,155.20x = 29,128,070.40 × 15,110,809.60
  4. Step 4: Simplify right side
    19,431,155.20x = 440,148,725,829,795.81
  5. Step 5: Solve for x
    x = 440,148,725,829,795.81/19,431,155.20
  6. Step 6: Final answer
    x = 22,651,701.42

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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.