Home / 28,773,994.32-39,707,648.76-15,720,973.20

Finding the Fourth Proportional to 28,773,994.32, 39,707,648.76 and 15,720,973.20

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Solution

The fourth proportional to 28,773,994.32, 39,707,648.76 and 15,720,973.20 is: 21,694,689.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,773,994.32 : 39,707,648.76 = 15,720,973.20 : x
  2. Step 2: Convert to fraction form
    28,773,994.32/39,707,648.76 = 15,720,973.20/x
  3. Step 3: Cross multiply
    28,773,994.32x = 39,707,648.76 × 15,720,973.20
  4. Step 4: Simplify right side
    28,773,994.32x = 624,242,881,990,973.12
  5. Step 5: Solve for x
    x = 624,242,881,990,973.12/28,773,994.32
  6. Step 6: Final answer
    x = 21,694,689.83

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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.