Home / 28,164.09-38,866.13-15,417.12

Finding the Fourth Proportional to 28,164.09, 38,866.13 and 15,417.12

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Solution

The fourth proportional to 28,164.09, 38,866.13 and 15,417.12 is: 21,275.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,164.09 : 38,866.13 = 15,417.12 : x
  2. Step 2: Convert to fraction form
    28,164.09/38,866.13 = 15,417.12/x
  3. Step 3: Cross multiply
    28,164.09x = 38,866.13 × 15,417.12
  4. Step 4: Simplify right side
    28,164.09x = 599,203,916.62
  5. Step 5: Solve for x
    x = 599,203,916.62/28,164.09
  6. Step 6: Final answer
    x = 21,275.46

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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.