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Finding the Fourth Proportional to 18,602.50, 27,880.02 and 8,720.01

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Solution

The fourth proportional to 18,602.50, 27,880.02 and 8,720.01 is: 13,068.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.50 : 27,880.02 = 8,720.01 : x
  2. Step 2: Convert to fraction form
    18,602.50/27,880.02 = 8,720.01/x
  3. Step 3: Cross multiply
    18,602.50x = 27,880.02 × 8,720.01
  4. Step 4: Simplify right side
    18,602.50x = 243,113,913.80
  5. Step 5: Solve for x
    x = 243,113,913.80/18,602.50
  6. Step 6: Final answer
    x = 13,068.88

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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.