Home / 12,891,359.20-19,316,043.60-9,490,136.80

Finding the Fourth Proportional to 12,891,359.20, 19,316,043.60 and 9,490,136.80

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Solution

The fourth proportional to 12,891,359.20, 19,316,043.60 and 9,490,136.80 is: 14,219,749.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,891,359.20 : 19,316,043.60 = 9,490,136.80 : x
  2. Step 2: Convert to fraction form
    12,891,359.20/19,316,043.60 = 9,490,136.80/x
  3. Step 3: Cross multiply
    12,891,359.20x = 19,316,043.60 × 9,490,136.80
  4. Step 4: Simplify right side
    12,891,359.20x = 183,311,896,198,764.50
  5. Step 5: Solve for x
    x = 183,311,896,198,764.50/12,891,359.20
  6. Step 6: Final answer
    x = 14,219,749.32

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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.