Home / 12,810,860.20-17,678,823.78-7,009,575.40

Finding the Fourth Proportional to 12,810,860.20, 17,678,823.78 and 7,009,575.40

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Solution

The fourth proportional to 12,810,860.20, 17,678,823.78 and 7,009,575.40 is: 9,673,124.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810,860.20 : 17,678,823.78 = 7,009,575.40 : x
  2. Step 2: Convert to fraction form
    12,810,860.20/17,678,823.78 = 7,009,575.40/x
  3. Step 3: Cross multiply
    12,810,860.20x = 17,678,823.78 × 7,009,575.40
  4. Step 4: Simplify right side
    12,810,860.20x = 123,921,048,269,223.03
  5. Step 5: Solve for x
    x = 123,921,048,269,223.03/12,810,860.20
  6. Step 6: Final answer
    x = 9,673,124.70

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1.5x scale

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.