Home / 21,382.02-29,515.38-19,139.94

Finding the Fourth Proportional to 21,382.02, 29,515.38 and 19,139.94

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Solution

The fourth proportional to 21,382.02, 29,515.38 and 19,139.94 is: 26,420.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.02 : 29,515.38 = 19,139.94 : x
  2. Step 2: Convert to fraction form
    21,382.02/29,515.38 = 19,139.94/x
  3. Step 3: Cross multiply
    21,382.02x = 29,515.38 × 19,139.94
  4. Step 4: Simplify right side
    21,382.02x = 564,922,602.28
  5. Step 5: Solve for x
    x = 564,922,602.28/21,382.02
  6. Step 6: Final answer
    x = 26,420.45

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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.