Home / 20,727,820.10-31,091,730.16-9,939,567.80

Finding the Fourth Proportional to 20,727,820.10, 31,091,730.16 and 9,939,567.80

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Solution

The fourth proportional to 20,727,820.10, 31,091,730.16 and 9,939,567.80 is: 14,909,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727,820.10 : 31,091,730.16 = 9,939,567.80 : x
  2. Step 2: Convert to fraction form
    20,727,820.10/31,091,730.16 = 9,939,567.80/x
  3. Step 3: Cross multiply
    20,727,820.10x = 31,091,730.16 × 9,939,567.80
  4. Step 4: Simplify right side
    20,727,820.10x = 309,038,359,944,624.88
  5. Step 5: Solve for x
    x = 309,038,359,944,624.88/20,727,820.10
  6. Step 6: Final answer
    x = 14,909,351.70

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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.