Home / 12,128,191.81-16,736,818.05-6,621,566.48

Finding the Fourth Proportional to 12,128,191.81, 16,736,818.05 and 6,621,566.48

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Solution

The fourth proportional to 12,128,191.81, 16,736,818.05 and 6,621,566.48 is: 9,137,714.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,191.81 : 16,736,818.05 = 6,621,566.48 : x
  2. Step 2: Convert to fraction form
    12,128,191.81/16,736,818.05 = 6,621,566.48/x
  3. Step 3: Cross multiply
    12,128,191.81x = 16,736,818.05 × 6,621,566.48
  4. Step 4: Simplify right side
    12,128,191.81x = 110,823,953,454,962.55
  5. Step 5: Solve for x
    x = 110,823,953,454,962.55/12,128,191.81
  6. Step 6: Final answer
    x = 9,137,714.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.