Home / 13,407.36-18,503.85-8,812.02

Finding the Fourth Proportional to 13,407.36, 18,503.85 and 8,812.02

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Solution

The fourth proportional to 13,407.36, 18,503.85 and 8,812.02 is: 12,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.36 : 18,503.85 = 8,812.02 : x
  2. Step 2: Convert to fraction form
    13,407.36/18,503.85 = 8,812.02/x
  3. Step 3: Cross multiply
    13,407.36x = 18,503.85 × 8,812.02
  4. Step 4: Simplify right side
    13,407.36x = 163,056,296.28
  5. Step 5: Solve for x
    x = 163,056,296.28/13,407.36
  6. Step 6: Final answer
    x = 12,161.70

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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.