Home / 21,012,005.48-28,996,587.78-11,354,213.48

Finding the Fourth Proportional to 21,012,005.48, 28,996,587.78 and 11,354,213.48

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Solution

The fourth proportional to 21,012,005.48, 28,996,587.78 and 11,354,213.48 is: 15,668,825.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012,005.48 : 28,996,587.78 = 11,354,213.48 : x
  2. Step 2: Convert to fraction form
    21,012,005.48/28,996,587.78 = 11,354,213.48/x
  3. Step 3: Cross multiply
    21,012,005.48x = 28,996,587.78 × 11,354,213.48
  4. Step 4: Simplify right side
    21,012,005.48x = 329,233,447,845,679.31
  5. Step 5: Solve for x
    x = 329,233,447,845,679.31/21,012,005.48
  6. Step 6: Final answer
    x = 15,668,825.53

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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.