Home / 20,157,684.72-27,808,859.16-12,811,588.08

Finding the Fourth Proportional to 20,157,684.72, 27,808,859.16 and 12,811,588.08

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Solution

The fourth proportional to 20,157,684.72, 27,808,859.16 and 12,811,588.08 is: 17,674,433.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157,684.72 : 27,808,859.16 = 12,811,588.08 : x
  2. Step 2: Convert to fraction form
    20,157,684.72/27,808,859.16 = 12,811,588.08/x
  3. Step 3: Cross multiply
    20,157,684.72x = 27,808,859.16 × 12,811,588.08
  4. Step 4: Simplify right side
    20,157,684.72x = 356,275,648,532,654.81
  5. Step 5: Solve for x
    x = 356,275,648,532,654.81/20,157,684.72
  6. Step 6: Final answer
    x = 17,674,433.03

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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.