Home / 20,779,816.70-31,106,739.45-15,698,978.30

Finding the Fourth Proportional to 20,779,816.70, 31,106,739.45 and 15,698,978.30

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Solution

The fourth proportional to 20,779,816.70, 31,106,739.45 and 15,698,978.30 is: 23,500,882.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779,816.70 : 31,106,739.45 = 15,698,978.30 : x
  2. Step 2: Convert to fraction form
    20,779,816.70/31,106,739.45 = 15,698,978.30/x
  3. Step 3: Cross multiply
    20,779,816.70x = 31,106,739.45 × 15,698,978.30
  4. Step 4: Simplify right side
    20,779,816.70x = 488,344,027,609,303.94
  5. Step 5: Solve for x
    x = 488,344,027,609,303.94/20,779,816.70
  6. Step 6: Final answer
    x = 23,500,882.35

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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.