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Finding the Fourth Proportional to 14,988.56, 20,683.95 and 8,274.01

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Solution

The fourth proportional to 14,988.56, 20,683.95 and 8,274.01 is: 11,417.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,988.56 : 20,683.95 = 8,274.01 : x
  2. Step 2: Convert to fraction form
    14,988.56/20,683.95 = 8,274.01/x
  3. Step 3: Cross multiply
    14,988.56x = 20,683.95 × 8,274.01
  4. Step 4: Simplify right side
    14,988.56x = 171,139,157.43
  5. Step 5: Solve for x
    x = 171,139,157.43/14,988.56
  6. Step 6: Final answer
    x = 11,417.99

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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.