Home / 19,478.16-29,173.38-13,660.74

Finding the Fourth Proportional to 19,478.16, 29,173.38 and 13,660.74

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Solution

The fourth proportional to 19,478.16, 29,173.38 and 13,660.74 is: 20,460.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,478.16 : 29,173.38 = 13,660.74 : x
  2. Step 2: Convert to fraction form
    19,478.16/29,173.38 = 13,660.74/x
  3. Step 3: Cross multiply
    19,478.16x = 29,173.38 × 13,660.74
  4. Step 4: Simplify right side
    19,478.16x = 398,529,959.10
  5. Step 5: Solve for x
    x = 398,529,959.10/19,478.16
  6. Step 6: Final answer
    x = 20,460.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.