Home / 13,280.19-19,921.75-4,392.29

Finding the Fourth Proportional to 13,280.19, 19,921.75 and 4,392.29

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Solution

The fourth proportional to 13,280.19, 19,921.75 and 4,392.29 is: 6,588.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.19 : 19,921.75 = 4,392.29 : x
  2. Step 2: Convert to fraction form
    13,280.19/19,921.75 = 4,392.29/x
  3. Step 3: Cross multiply
    13,280.19x = 19,921.75 × 4,392.29
  4. Step 4: Simplify right side
    13,280.19x = 87,502,009.19
  5. Step 5: Solve for x
    x = 87,502,009.19/13,280.19
  6. Step 6: Final answer
    x = 6,588.91

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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.