Home / 20,727,840.60-31,091,760.90-9,939,588.30

Finding the Fourth Proportional to 20,727,840.60, 31,091,760.90 and 9,939,588.30

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Solution

The fourth proportional to 20,727,840.60, 31,091,760.90 and 9,939,588.30 is: 14,909,382.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727,840.60 : 31,091,760.90 = 9,939,588.30 : x
  2. Step 2: Convert to fraction form
    20,727,840.60/31,091,760.90 = 9,939,588.30/x
  3. Step 3: Cross multiply
    20,727,840.60x = 31,091,760.90 × 9,939,588.30
  4. Step 4: Simplify right side
    20,727,840.60x = 309,039,302,868,037.50
  5. Step 5: Solve for x
    x = 309,039,302,868,037.50/20,727,840.60
  6. Step 6: Final answer
    x = 14,909,382.45

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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.