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Finding the Fourth Proportional to 29,315.80, 40,455.93 and 15,887.05

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Solution

The fourth proportional to 29,315.80, 40,455.93 and 15,887.05 is: 21,924.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,315.80 : 40,455.93 = 15,887.05 : x
  2. Step 2: Convert to fraction form
    29,315.80/40,455.93 = 15,887.05/x
  3. Step 3: Cross multiply
    29,315.80x = 40,455.93 × 15,887.05
  4. Step 4: Simplify right side
    29,315.80x = 642,725,382.71
  5. Step 5: Solve for x
    x = 642,725,382.71/29,315.80
  6. Step 6: Final answer
    x = 21,924.20

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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.