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Finding the Fourth Proportional to 13,984.08, 21,071.74 and 11,572.08

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Solution

The fourth proportional to 13,984.08, 21,071.74 and 11,572.08 is: 17,437.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.08 : 21,071.74 = 11,572.08 : x
  2. Step 2: Convert to fraction form
    13,984.08/21,071.74 = 11,572.08/x
  3. Step 3: Cross multiply
    13,984.08x = 21,071.74 × 11,572.08
  4. Step 4: Simplify right side
    13,984.08x = 243,843,861.02
  5. Step 5: Solve for x
    x = 243,843,861.02/13,984.08
  6. Step 6: Final answer
    x = 17,437.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.