Home / 15,219,261.92-21,001,920.36-9,111,058.40

Finding the Fourth Proportional to 15,219,261.92, 21,001,920.36 and 9,111,058.40

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Solution

The fourth proportional to 15,219,261.92, 21,001,920.36 and 9,111,058.40 is: 12,572,864.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219,261.92 : 21,001,920.36 = 9,111,058.40 : x
  2. Step 2: Convert to fraction form
    15,219,261.92/21,001,920.36 = 9,111,058.40/x
  3. Step 3: Cross multiply
    15,219,261.92x = 21,001,920.36 × 9,111,058.40
  4. Step 4: Simplify right side
    15,219,261.92x = 191,349,722,912,109.03
  5. Step 5: Solve for x
    x = 191,349,722,912,109.03/15,219,261.92
  6. Step 6: Final answer
    x = 12,572,864.83

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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.