Home / 28,769,192.12-39,702,070.40-15,717,296.40

Finding the Fourth Proportional to 28,769,192.12, 39,702,070.40 and 15,717,296.40

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Solution

The fourth proportional to 28,769,192.12, 39,702,070.40 and 15,717,296.40 is: 21,690,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,769,192.12 : 39,702,070.40 = 15,717,296.40 : x
  2. Step 2: Convert to fraction form
    28,769,192.12/39,702,070.40 = 15,717,296.40/x
  3. Step 3: Cross multiply
    28,769,192.12x = 39,702,070.40 × 15,717,296.40
  4. Step 4: Simplify right side
    28,769,192.12x = 624,009,208,091,880.12
  5. Step 5: Solve for x
    x = 624,009,208,091,880.12/28,769,192.12
  6. Step 6: Final answer
    x = 21,690,188.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.