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Finding the Fourth Proportional to 15,366.94, 21,206.80 and 9,398.50

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Solution

The fourth proportional to 15,366.94, 21,206.80 and 9,398.50 is: 12,970.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,366.94 : 21,206.80 = 9,398.50 : x
  2. Step 2: Convert to fraction form
    15,366.94/21,206.80 = 9,398.50/x
  3. Step 3: Cross multiply
    15,366.94x = 21,206.80 × 9,398.50
  4. Step 4: Simplify right side
    15,366.94x = 199,312,109.80
  5. Step 5: Solve for x
    x = 199,312,109.80/15,366.94
  6. Step 6: Final answer
    x = 12,970.19

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.