Home / 20,758,538.40-31,137,643.58-5,405,798.40

Finding the Fourth Proportional to 20,758,538.40, 31,137,643.58 and 5,405,798.40

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Solution

The fourth proportional to 20,758,538.40, 31,137,643.58 and 5,405,798.40 is: 8,108,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758,538.40 : 31,137,643.58 = 5,405,798.40 : x
  2. Step 2: Convert to fraction form
    20,758,538.40/31,137,643.58 = 5,405,798.40/x
  3. Step 3: Cross multiply
    20,758,538.40x = 31,137,643.58 × 5,405,798.40
  4. Step 4: Simplify right side
    20,758,538.40x = 168,323,823,817,505.28
  5. Step 5: Solve for x
    x = 168,323,823,817,505.28/20,758,538.40
  6. Step 6: Final answer
    x = 8,108,654.89

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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.