Home / 27,643.02-38,148.96-20,916.99

Finding the Fourth Proportional to 27,643.02, 38,148.96 and 20,916.99

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Solution

The fourth proportional to 27,643.02, 38,148.96 and 20,916.99 is: 28,866.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,643.02 : 38,148.96 = 20,916.99 : x
  2. Step 2: Convert to fraction form
    27,643.02/38,148.96 = 20,916.99/x
  3. Step 3: Cross multiply
    27,643.02x = 38,148.96 × 20,916.99
  4. Step 4: Simplify right side
    27,643.02x = 797,961,414.83
  5. Step 5: Solve for x
    x = 797,961,414.83/27,643.02
  6. Step 6: Final answer
    x = 28,866.65

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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.