Home / 13,503.04-18,622.56-8,785.60

Finding the Fourth Proportional to 13,503.04, 18,622.56 and 8,785.60

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Solution

The fourth proportional to 13,503.04, 18,622.56 and 8,785.60 is: 12,116.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.04 : 18,622.56 = 8,785.60 : x
  2. Step 2: Convert to fraction form
    13,503.04/18,622.56 = 8,785.60/x
  3. Step 3: Cross multiply
    13,503.04x = 18,622.56 × 8,785.60
  4. Step 4: Simplify right side
    13,503.04x = 163,610,363.14
  5. Step 5: Solve for x
    x = 163,610,363.14/13,503.04
  6. Step 6: Final answer
    x = 12,116.56

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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.