Home / 28,271,572.85-39,016,437.06-21,289,932.78

Finding the Fourth Proportional to 28,271,572.85, 39,016,437.06 and 21,289,932.78

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Solution

The fourth proportional to 28,271,572.85, 39,016,437.06 and 21,289,932.78 is: 29,381,362.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271,572.85 : 39,016,437.06 = 21,289,932.78 : x
  2. Step 2: Convert to fraction form
    28,271,572.85/39,016,437.06 = 21,289,932.78/x
  3. Step 3: Cross multiply
    28,271,572.85x = 39,016,437.06 × 21,289,932.78
  4. Step 4: Simplify right side
    28,271,572.85x = 830,657,322,216,051.25
  5. Step 5: Solve for x
    x = 830,657,322,216,051.25/28,271,572.85
  6. Step 6: Final answer
    x = 29,381,362.22

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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.