Home / 21,660,947.64-29,874,888.92-18,408,528.72

Finding the Fourth Proportional to 21,660,947.64, 29,874,888.92 and 18,408,528.72

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Solution

The fourth proportional to 21,660,947.64, 29,874,888.92 and 18,408,528.72 is: 25,389,136.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660,947.64 : 29,874,888.92 = 18,408,528.72 : x
  2. Step 2: Convert to fraction form
    21,660,947.64/29,874,888.92 = 18,408,528.72/x
  3. Step 3: Cross multiply
    21,660,947.64x = 29,874,888.92 × 18,408,528.72
  4. Step 4: Simplify right side
    21,660,947.64x = 549,952,750,690,629.75
  5. Step 5: Solve for x
    x = 549,952,750,690,629.75/21,660,947.64
  6. Step 6: Final answer
    x = 25,389,136.24

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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.