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Finding the Fourth Proportional to 15,802.26, 21,807.27 and 8,728.53

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Solution

The fourth proportional to 15,802.26, 21,807.27 and 8,728.53 is: 12,045.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,802.26 : 21,807.27 = 8,728.53 : x
  2. Step 2: Convert to fraction form
    15,802.26/21,807.27 = 8,728.53/x
  3. Step 3: Cross multiply
    15,802.26x = 21,807.27 × 8,728.53
  4. Step 4: Simplify right side
    15,802.26x = 190,345,410.41
  5. Step 5: Solve for x
    x = 190,345,410.41/15,802.26
  6. Step 6: Final answer
    x = 12,045.45

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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.