Home / 19,518.77-29,280.13-5,478.84

Finding the Fourth Proportional to 19,518.77, 29,280.13 and 5,478.84

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Solution

The fourth proportional to 19,518.77, 29,280.13 and 5,478.84 is: 8,218.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,518.77 : 29,280.13 = 5,478.84 : x
  2. Step 2: Convert to fraction form
    19,518.77/29,280.13 = 5,478.84/x
  3. Step 3: Cross multiply
    19,518.77x = 29,280.13 × 5,478.84
  4. Step 4: Simplify right side
    19,518.77x = 160,421,164.57
  5. Step 5: Solve for x
    x = 160,421,164.57/19,518.77
  6. Step 6: Final answer
    x = 8,218.81

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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.