Home / 12,587.90-18,880.63-3,822.89

Finding the Fourth Proportional to 12,587.90, 18,880.63 and 3,822.89

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Solution

The fourth proportional to 12,587.90, 18,880.63 and 3,822.89 is: 5,733.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.90 : 18,880.63 = 3,822.89 : x
  2. Step 2: Convert to fraction form
    12,587.90/18,880.63 = 3,822.89/x
  3. Step 3: Cross multiply
    12,587.90x = 18,880.63 × 3,822.89
  4. Step 4: Simplify right side
    12,587.90x = 72,178,552.51
  5. Step 5: Solve for x
    x = 72,178,552.51/12,587.90
  6. Step 6: Final answer
    x = 5,733.96

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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.