Home / 20,786,689.20-31,180,033.80-13,133,938.80

Finding the Fourth Proportional to 20,786,689.20, 31,180,033.80 and 13,133,938.80

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Solution

The fourth proportional to 20,786,689.20, 31,180,033.80 and 13,133,938.80 is: 19,700,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,689.20 : 31,180,033.80 = 13,133,938.80 : x
  2. Step 2: Convert to fraction form
    20,786,689.20/31,180,033.80 = 13,133,938.80/x
  3. Step 3: Cross multiply
    20,786,689.20x = 31,180,033.80 × 13,133,938.80
  4. Step 4: Simplify right side
    20,786,689.20x = 409,516,655,711,131.50
  5. Step 5: Solve for x
    x = 409,516,655,711,131.50/20,786,689.20
  6. Step 6: Final answer
    x = 19,700,908.20

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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.