Home / 20,785,642.80-31,161,875.40-8,808,529.20

Finding the Fourth Proportional to 20,785,642.80, 31,161,875.40 and 8,808,529.20

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Solution

The fourth proportional to 20,785,642.80, 31,161,875.40 and 8,808,529.20 is: 13,205,763.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,642.80 : 31,161,875.40 = 8,808,529.20 : x
  2. Step 2: Convert to fraction form
    20,785,642.80/31,161,875.40 = 8,808,529.20/x
  3. Step 3: Cross multiply
    20,785,642.80x = 31,161,875.40 × 8,808,529.20
  4. Step 4: Simplify right side
    20,785,642.80x = 274,490,289,387,661.66
  5. Step 5: Solve for x
    x = 274,490,289,387,661.66/20,785,642.80
  6. Step 6: Final answer
    x = 13,205,763.81

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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.