Home / 12,988.41-19,480.65-3,627.51

Finding the Fourth Proportional to 12,988.41, 19,480.65 and 3,627.51

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Solution

The fourth proportional to 12,988.41, 19,480.65 and 3,627.51 is: 5,440.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.41 : 19,480.65 = 3,627.51 : x
  2. Step 2: Convert to fraction form
    12,988.41/19,480.65 = 3,627.51/x
  3. Step 3: Cross multiply
    12,988.41x = 19,480.65 × 3,627.51
  4. Step 4: Simplify right side
    12,988.41x = 70,666,252.68
  5. Step 5: Solve for x
    x = 70,666,252.68/12,988.41
  6. Step 6: Final answer
    x = 5,440.72

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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.