Home / 20,735,999.10-31,103,998.65-13,140,402.30

Finding the Fourth Proportional to 20,735,999.10, 31,103,998.65 and 13,140,402.30

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Solution

The fourth proportional to 20,735,999.10, 31,103,998.65 and 13,140,402.30 is: 19,710,603.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735,999.10 : 31,103,998.65 = 13,140,402.30 : x
  2. Step 2: Convert to fraction form
    20,735,999.10/31,103,998.65 = 13,140,402.30/x
  3. Step 3: Cross multiply
    20,735,999.10x = 31,103,998.65 × 13,140,402.30
  4. Step 4: Simplify right side
    20,735,999.10x = 408,719,055,399,656.88
  5. Step 5: Solve for x
    x = 408,719,055,399,656.88/20,735,999.10
  6. Step 6: Final answer
    x = 19,710,603.45

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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.