Home / 12,455,680.40-18,683,520.60-11,658,518.90

Finding the Fourth Proportional to 12,455,680.40, 18,683,520.60 and 11,658,518.90

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Solution

The fourth proportional to 12,455,680.40, 18,683,520.60 and 11,658,518.90 is: 17,487,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,680.40 : 18,683,520.60 = 11,658,518.90 : x
  2. Step 2: Convert to fraction form
    12,455,680.40/18,683,520.60 = 11,658,518.90/x
  3. Step 3: Cross multiply
    12,455,680.40x = 18,683,520.60 × 11,658,518.90
  4. Step 4: Simplify right side
    12,455,680.40x = 217,822,178,033,639.38
  5. Step 5: Solve for x
    x = 217,822,178,033,639.38/12,455,680.40
  6. Step 6: Final answer
    x = 17,487,778.35

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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.