Home / 20,157,553.60-30,240,218.40-8,642,852.80

Finding the Fourth Proportional to 20,157,553.60, 30,240,218.40 and 8,642,852.80

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Solution

The fourth proportional to 20,157,553.60, 30,240,218.40 and 8,642,852.80 is: 12,965,946.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157,553.60 : 30,240,218.40 = 8,642,852.80 : x
  2. Step 2: Convert to fraction form
    20,157,553.60/30,240,218.40 = 8,642,852.80/x
  3. Step 3: Cross multiply
    20,157,553.60x = 30,240,218.40 × 8,642,852.80
  4. Step 4: Simplify right side
    20,157,553.60x = 261,361,756,271,051.53
  5. Step 5: Solve for x
    x = 261,361,756,271,051.53/20,157,553.60
  6. Step 6: Final answer
    x = 12,965,946.24

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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.