Home / 21,384,165.60-32,076,248.40-20,959,012.80

Finding the Fourth Proportional to 21,384,165.60, 32,076,248.40 and 20,959,012.80

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Solution

The fourth proportional to 21,384,165.60, 32,076,248.40 and 20,959,012.80 is: 31,438,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384,165.60 : 32,076,248.40 = 20,959,012.80 : x
  2. Step 2: Convert to fraction form
    21,384,165.60/32,076,248.40 = 20,959,012.80/x
  3. Step 3: Cross multiply
    21,384,165.60x = 32,076,248.40 × 20,959,012.80
  4. Step 4: Simplify right side
    21,384,165.60x = 672,286,500,791,579.50
  5. Step 5: Solve for x
    x = 672,286,500,791,579.50/21,384,165.60
  6. Step 6: Final answer
    x = 31,438,519.20

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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.