Home / 12,186,189.57-18,170,336.58-11,851,381.74

Finding the Fourth Proportional to 12,186,189.57, 18,170,336.58 and 11,851,381.74

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Solution

The fourth proportional to 12,186,189.57, 18,170,336.58 and 11,851,381.74 is: 17,671,118.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186,189.57 : 18,170,336.58 = 11,851,381.74 : x
  2. Step 2: Convert to fraction form
    12,186,189.57/18,170,336.58 = 11,851,381.74/x
  3. Step 3: Cross multiply
    12,186,189.57x = 18,170,336.58 × 11,851,381.74
  4. Step 4: Simplify right side
    12,186,189.57x = 215,343,595,153,866.03
  5. Step 5: Solve for x
    x = 215,343,595,153,866.03/12,186,189.57
  6. Step 6: Final answer
    x = 17,671,118.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.