Home / 12,920,612.40-17,831,239.38-7,119,392.63

Finding the Fourth Proportional to 12,920,612.40, 17,831,239.38 and 7,119,392.63

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Solution

The fourth proportional to 12,920,612.40, 17,831,239.38 and 7,119,392.63 is: 9,825,199.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,612.40 : 17,831,239.38 = 7,119,392.63 : x
  2. Step 2: Convert to fraction form
    12,920,612.40/17,831,239.38 = 7,119,392.63/x
  3. Step 3: Cross multiply
    12,920,612.40x = 17,831,239.38 × 7,119,392.63
  4. Step 4: Simplify right side
    12,920,612.40x = 126,947,594,136,581.56
  5. Step 5: Solve for x
    x = 126,947,594,136,581.56/12,920,612.40
  6. Step 6: Final answer
    x = 9,825,199.47

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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.