Home / 21,048,076,978.76-31,561,784,235.66-10,412,012,468.36

Finding the Fourth Proportional to 21,048,076,978.76, 31,561,784,235.66 and 10,412,012,468.36

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Solution

The fourth proportional to 21,048,076,978.76, 31,561,784,235.66 and 10,412,012,468.36 is: 15,612,908,073.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,048,076,978.76 : 31,561,784,235.66 = 10,412,012,468.36 : x
  2. Step 2: Convert to fraction form
    21,048,076,978.76/31,561,784,235.66 = 10,412,012,468.36/x
  3. Step 3: Cross multiply
    21,048,076,978.76x = 31,561,784,235.66 × 10,412,012,468.36
  4. Step 4: Simplify right side
    21,048,076,978.76x = 328,621,690,985,380,052,992
  5. Step 5: Solve for x
    x = 328,621,690,985,380,052,992/21,048,076,978.76
  6. Step 6: Final answer
    x = 15,612,908,073.12

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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.