Home / 12,920,507.10-17,831,095.65-7,119,287.10

Finding the Fourth Proportional to 12,920,507.10, 17,831,095.65 and 7,119,287.10

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Solution

The fourth proportional to 12,920,507.10, 17,831,095.65 and 7,119,287.10 is: 9,825,054.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,507.10 : 17,831,095.65 = 7,119,287.10 : x
  2. Step 2: Convert to fraction form
    12,920,507.10/17,831,095.65 = 7,119,287.10/x
  3. Step 3: Cross multiply
    12,920,507.10x = 17,831,095.65 × 7,119,287.10
  4. Step 4: Simplify right side
    12,920,507.10x = 126,944,689,239,911.09
  5. Step 5: Solve for x
    x = 126,944,689,239,911.09/12,920,507.10
  6. Step 6: Final answer
    x = 9,825,054.72

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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.