Home / 21,784.02-30,055.10-12,350.76

Finding the Fourth Proportional to 21,784.02, 30,055.10 and 12,350.76

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Solution

The fourth proportional to 21,784.02, 30,055.10 and 12,350.76 is: 17,040.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.02 : 30,055.10 = 12,350.76 : x
  2. Step 2: Convert to fraction form
    21,784.02/30,055.10 = 12,350.76/x
  3. Step 3: Cross multiply
    21,784.02x = 30,055.10 × 12,350.76
  4. Step 4: Simplify right side
    21,784.02x = 371,203,265.12
  5. Step 5: Solve for x
    x = 371,203,265.12/21,784.02
  6. Step 6: Final answer
    x = 17,040.16

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Double scale
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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.