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Finding the Fourth Proportional to 13,089.59, 19,705.59 and 11,927.08

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Solution

The fourth proportional to 13,089.59, 19,705.59 and 11,927.08 is: 17,955.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.59 : 19,705.59 = 11,927.08 : x
  2. Step 2: Convert to fraction form
    13,089.59/19,705.59 = 11,927.08/x
  3. Step 3: Cross multiply
    13,089.59x = 19,705.59 × 11,927.08
  4. Step 4: Simplify right side
    13,089.59x = 235,030,148.38
  5. Step 5: Solve for x
    x = 235,030,148.38/13,089.59
  6. Step 6: Final answer
    x = 17,955.50

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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.