Home / 12,821,239.78-17,693,312.97-7,020,381.04

Finding the Fourth Proportional to 12,821,239.78, 17,693,312.97 and 7,020,381.04

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Solution

The fourth proportional to 12,821,239.78, 17,693,312.97 and 7,020,381.04 is: 9,688,126.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821,239.78 : 17,693,312.97 = 7,020,381.04 : x
  2. Step 2: Convert to fraction form
    12,821,239.78/17,693,312.97 = 7,020,381.04/x
  3. Step 3: Cross multiply
    12,821,239.78x = 17,693,312.97 × 7,020,381.04
  4. Step 4: Simplify right side
    12,821,239.78x = 124,213,798,909,374.08
  5. Step 5: Solve for x
    x = 124,213,798,909,374.08/12,821,239.78
  6. Step 6: Final answer
    x = 9,688,126.97

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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.