Home / 21,802.84-30,088.02-13,301.44

Finding the Fourth Proportional to 21,802.84, 30,088.02 and 13,301.44

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Solution

The fourth proportional to 21,802.84, 30,088.02 and 13,301.44 is: 18,356.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,802.84 : 30,088.02 = 13,301.44 : x
  2. Step 2: Convert to fraction form
    21,802.84/30,088.02 = 13,301.44/x
  3. Step 3: Cross multiply
    21,802.84x = 30,088.02 × 13,301.44
  4. Step 4: Simplify right side
    21,802.84x = 400,213,992.75
  5. Step 5: Solve for x
    x = 400,213,992.75/21,802.84
  6. Step 6: Final answer
    x = 18,356.05

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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.