Home / 19,331.46-26,731.08-15,345.60

Finding the Fourth Proportional to 19,331.46, 26,731.08 and 15,345.60

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Solution

The fourth proportional to 19,331.46, 26,731.08 and 15,345.60 is: 21,219.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.46 : 26,731.08 = 15,345.60 : x
  2. Step 2: Convert to fraction form
    19,331.46/26,731.08 = 15,345.60/x
  3. Step 3: Cross multiply
    19,331.46x = 26,731.08 × 15,345.60
  4. Step 4: Simplify right side
    19,331.46x = 410,204,461.25
  5. Step 5: Solve for x
    x = 410,204,461.25/19,331.46
  6. Step 6: Final answer
    x = 21,219.53

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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.