Home / 12,997,397.06-17,936,681.60-7,117,278.20

Finding the Fourth Proportional to 12,997,397.06, 17,936,681.60 and 7,117,278.20

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Solution

The fourth proportional to 12,997,397.06, 17,936,681.60 and 7,117,278.20 is: 9,821,993.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997,397.06 : 17,936,681.60 = 7,117,278.20 : x
  2. Step 2: Convert to fraction form
    12,997,397.06/17,936,681.60 = 7,117,278.20/x
  3. Step 3: Cross multiply
    12,997,397.06x = 17,936,681.60 × 7,117,278.20
  4. Step 4: Simplify right side
    12,997,397.06x = 127,660,352,932,021.14
  5. Step 5: Solve for x
    x = 127,660,352,932,021.14/12,997,397.06
  6. Step 6: Final answer
    x = 9,821,993.77

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1.5x scale

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.