Home / 22,258.86-30,720.60-12,698.70

Finding the Fourth Proportional to 22,258.86, 30,720.60 and 12,698.70

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Solution

The fourth proportional to 22,258.86, 30,720.60 and 12,698.70 is: 17,526.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,258.86 : 30,720.60 = 12,698.70 : x
  2. Step 2: Convert to fraction form
    22,258.86/30,720.60 = 12,698.70/x
  3. Step 3: Cross multiply
    22,258.86x = 30,720.60 × 12,698.70
  4. Step 4: Simplify right side
    22,258.86x = 390,111,683.22
  5. Step 5: Solve for x
    x = 390,111,683.22/22,258.86
  6. Step 6: Final answer
    x = 17,526.13

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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.