Home / 20,101,822.78-30,076,643.15-11,908,862.29

Finding the Fourth Proportional to 20,101,822.78, 30,076,643.15 and 11,908,862.29

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Solution

The fourth proportional to 20,101,822.78, 30,076,643.15 and 11,908,862.29 is: 17,818,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101,822.78 : 30,076,643.15 = 11,908,862.29 : x
  2. Step 2: Convert to fraction form
    20,101,822.78/30,076,643.15 = 11,908,862.29/x
  3. Step 3: Cross multiply
    20,101,822.78x = 30,076,643.15 × 11,908,862.29
  4. Step 4: Simplify right side
    20,101,822.78x = 358,178,601,208,894.31
  5. Step 5: Solve for x
    x = 358,178,601,208,894.31/20,101,822.78
  6. Step 6: Final answer
    x = 17,818,215.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.