Home / 12,109,123.64-16,714,640-7,215,880.72

Finding the Fourth Proportional to 12,109,123.64, 16,714,640 and 7,215,880.72

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Solution

The fourth proportional to 12,109,123.64, 16,714,640 and 7,215,880.72 is: 9,960,328.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109,123.64 : 16,714,640 = 7,215,880.72 : x
  2. Step 2: Convert to fraction form
    12,109,123.64/16,714,640 = 7,215,880.72/x
  3. Step 3: Cross multiply
    12,109,123.64x = 16,714,640 × 7,215,880.72
  4. Step 4: Simplify right side
    12,109,123.64x = 120,610,848,517,740.80
  5. Step 5: Solve for x
    x = 120,610,848,517,740.80/12,109,123.64
  6. Step 6: Final answer
    x = 9,960,328.44

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1.5x scale

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.