Home / 21,802,628.06-30,078,173.39-12,977,130.35

Finding the Fourth Proportional to 21,802,628.06, 30,078,173.39 and 12,977,130.35

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Solution

The fourth proportional to 21,802,628.06, 30,078,173.39 and 12,977,130.35 is: 17,902,813.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,802,628.06 : 30,078,173.39 = 12,977,130.35 : x
  2. Step 2: Convert to fraction form
    21,802,628.06/30,078,173.39 = 12,977,130.35/x
  3. Step 3: Cross multiply
    21,802,628.06x = 30,078,173.39 × 12,977,130.35
  4. Step 4: Simplify right side
    21,802,628.06x = 390,328,376,605,319.12
  5. Step 5: Solve for x
    x = 390,328,376,605,319.12/21,802,628.06
  6. Step 6: Final answer
    x = 17,902,813.16

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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.