Home / 13,408,085.91-20,020,947.39-12,650,339.55

Finding the Fourth Proportional to 13,408,085.91, 20,020,947.39 and 12,650,339.55

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Solution

The fourth proportional to 13,408,085.91, 20,020,947.39 and 12,650,339.55 is: 18,889,480.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,408,085.91 : 20,020,947.39 = 12,650,339.55 : x
  2. Step 2: Convert to fraction form
    13,408,085.91/20,020,947.39 = 12,650,339.55/x
  3. Step 3: Cross multiply
    13,408,085.91x = 20,020,947.39 × 12,650,339.55
  4. Step 4: Simplify right side
    13,408,085.91x = 253,271,782,596,186.31
  5. Step 5: Solve for x
    x = 253,271,782,596,186.31/13,408,085.91
  6. Step 6: Final answer
    x = 18,889,480.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.