Home / 12,127,904.70-18,191,857.05-7,076,615.10

Finding the Fourth Proportional to 12,127,904.70, 18,191,857.05 and 7,076,615.10

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Solution

The fourth proportional to 12,127,904.70, 18,191,857.05 and 7,076,615.10 is: 10,614,922.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,904.70 : 18,191,857.05 = 7,076,615.10 : x
  2. Step 2: Convert to fraction form
    12,127,904.70/18,191,857.05 = 7,076,615.10/x
  3. Step 3: Cross multiply
    12,127,904.70x = 18,191,857.05 × 7,076,615.10
  4. Step 4: Simplify right side
    12,127,904.70x = 128,736,770,297,071.45
  5. Step 5: Solve for x
    x = 128,736,770,297,071.45/12,127,904.70
  6. Step 6: Final answer
    x = 10,614,922.65

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1.5x scale

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.