Home / 22,115.16-30,518.64-12,683.52

Finding the Fourth Proportional to 22,115.16, 30,518.64 and 12,683.52

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Solution

The fourth proportional to 22,115.16, 30,518.64 and 12,683.52 is: 17,503.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.16 : 30,518.64 = 12,683.52 : x
  2. Step 2: Convert to fraction form
    22,115.16/30,518.64 = 12,683.52/x
  3. Step 3: Cross multiply
    22,115.16x = 30,518.64 × 12,683.52
  4. Step 4: Simplify right side
    22,115.16x = 387,083,780.81
  5. Step 5: Solve for x
    x = 387,083,780.81/22,115.16
  6. Step 6: Final answer
    x = 17,503.10

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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.