Home / 20,685,423.80-31,028,135.70-13,510,970.30

Finding the Fourth Proportional to 20,685,423.80, 31,028,135.70 and 13,510,970.30

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Solution

The fourth proportional to 20,685,423.80, 31,028,135.70 and 13,510,970.30 is: 20,266,455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685,423.80 : 31,028,135.70 = 13,510,970.30 : x
  2. Step 2: Convert to fraction form
    20,685,423.80/31,028,135.70 = 13,510,970.30/x
  3. Step 3: Cross multiply
    20,685,423.80x = 31,028,135.70 × 13,510,970.30
  4. Step 4: Simplify right side
    20,685,423.80x = 419,220,219,907,069.75
  5. Step 5: Solve for x
    x = 419,220,219,907,069.75/20,685,423.80
  6. Step 6: Final answer
    x = 20,266,455.45

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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.