Home / 20,772,017.10-31,158,025.65-19,779,993.90

Finding the Fourth Proportional to 20,772,017.10, 31,158,025.65 and 19,779,993.90

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Solution

The fourth proportional to 20,772,017.10, 31,158,025.65 and 19,779,993.90 is: 29,669,990.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772,017.10 : 31,158,025.65 = 19,779,993.90 : x
  2. Step 2: Convert to fraction form
    20,772,017.10/31,158,025.65 = 19,779,993.90/x
  3. Step 3: Cross multiply
    20,772,017.10x = 31,158,025.65 × 19,779,993.90
  4. Step 4: Simplify right side
    20,772,017.10x = 616,305,557,293,043.50
  5. Step 5: Solve for x
    x = 616,305,557,293,043.50/20,772,017.10
  6. Step 6: Final answer
    x = 29,669,990.85

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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.