Home / 15,615,942.54-21,549,995.91-8,740,422.78

Finding the Fourth Proportional to 15,615,942.54, 21,549,995.91 and 8,740,422.78

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Solution

The fourth proportional to 15,615,942.54, 21,549,995.91 and 8,740,422.78 is: 12,061,780.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615,942.54 : 21,549,995.91 = 8,740,422.78 : x
  2. Step 2: Convert to fraction form
    15,615,942.54/21,549,995.91 = 8,740,422.78/x
  3. Step 3: Cross multiply
    15,615,942.54x = 21,549,995.91 × 8,740,422.78
  4. Step 4: Simplify right side
    15,615,942.54x = 188,356,075,160,670.81
  5. Step 5: Solve for x
    x = 188,356,075,160,670.81/15,615,942.54
  6. Step 6: Final answer
    x = 12,061,780.75

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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.