Home / 13,280.34-19,920.51-4,521.54

Finding the Fourth Proportional to 13,280.34, 19,920.51 and 4,521.54

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Solution

The fourth proportional to 13,280.34, 19,920.51 and 4,521.54 is: 6,782.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.34 : 19,920.51 = 4,521.54 : x
  2. Step 2: Convert to fraction form
    13,280.34/19,920.51 = 4,521.54/x
  3. Step 3: Cross multiply
    13,280.34x = 19,920.51 × 4,521.54
  4. Step 4: Simplify right side
    13,280.34x = 90,071,382.79
  5. Step 5: Solve for x
    x = 90,071,382.79/13,280.34
  6. Step 6: Final answer
    x = 6,782.31

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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.