Home / 20,730,120.20-31,095,180.30-19,890,312.20

Finding the Fourth Proportional to 20,730,120.20, 31,095,180.30 and 19,890,312.20

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Solution

The fourth proportional to 20,730,120.20, 31,095,180.30 and 19,890,312.20 is: 29,835,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730,120.20 : 31,095,180.30 = 19,890,312.20 : x
  2. Step 2: Convert to fraction form
    20,730,120.20/31,095,180.30 = 19,890,312.20/x
  3. Step 3: Cross multiply
    20,730,120.20x = 31,095,180.30 × 19,890,312.20
  4. Step 4: Simplify right side
    20,730,120.20x = 618,492,844,082,289.62
  5. Step 5: Solve for x
    x = 618,492,844,082,289.62/20,730,120.20
  6. Step 6: Final answer
    x = 29,835,468.30

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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.