Home / 20,142,916.58-30,211,339.28-12,906,941.75

Finding the Fourth Proportional to 20,142,916.58, 30,211,339.28 and 12,906,941.75

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Solution

The fourth proportional to 20,142,916.58, 30,211,339.28 and 12,906,941.75 is: 19,358,467.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142,916.58 : 30,211,339.28 = 12,906,941.75 : x
  2. Step 2: Convert to fraction form
    20,142,916.58/30,211,339.28 = 12,906,941.75/x
  3. Step 3: Cross multiply
    20,142,916.58x = 30,211,339.28 × 12,906,941.75
  4. Step 4: Simplify right side
    20,142,916.58x = 389,935,996,177,038.81
  5. Step 5: Solve for x
    x = 389,935,996,177,038.81/20,142,916.58
  6. Step 6: Final answer
    x = 19,358,467.51

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1.5x scale

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.