Home / 21,009,468.74-28,995,295.77-12,314,946.34

Finding the Fourth Proportional to 21,009,468.74, 28,995,295.77 and 12,314,946.34

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Solution

The fourth proportional to 21,009,468.74, 28,995,295.77 and 12,314,946.34 is: 16,995,932.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009,468.74 : 28,995,295.77 = 12,314,946.34 : x
  2. Step 2: Convert to fraction form
    21,009,468.74/28,995,295.77 = 12,314,946.34/x
  3. Step 3: Cross multiply
    21,009,468.74x = 28,995,295.77 × 12,314,946.34
  4. Step 4: Simplify right side
    21,009,468.74x = 357,075,511,519,979
  5. Step 5: Solve for x
    x = 357,075,511,519,979/21,009,468.74
  6. Step 6: Final answer
    x = 16,995,932.45

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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.