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Finding the Fourth Proportional to 15,802.80, 21,805.56 and 9,088.74

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Solution

The fourth proportional to 15,802.80, 21,805.56 and 9,088.74 is: 12,541.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,802.80 : 21,805.56 = 9,088.74 : x
  2. Step 2: Convert to fraction form
    15,802.80/21,805.56 = 9,088.74/x
  3. Step 3: Cross multiply
    15,802.80x = 21,805.56 × 9,088.74
  4. Step 4: Simplify right side
    15,802.80x = 198,185,065.39
  5. Step 5: Solve for x
    x = 198,185,065.39/15,802.80
  6. Step 6: Final answer
    x = 12,541.14

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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.