Home / 19,218.69-28,827.90-8,947.80

Finding the Fourth Proportional to 19,218.69, 28,827.90 and 8,947.80

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Solution

The fourth proportional to 19,218.69, 28,827.90 and 8,947.80 is: 13,421.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,218.69 : 28,827.90 = 8,947.80 : x
  2. Step 2: Convert to fraction form
    19,218.69/28,827.90 = 8,947.80/x
  3. Step 3: Cross multiply
    19,218.69x = 28,827.90 × 8,947.80
  4. Step 4: Simplify right side
    19,218.69x = 257,946,283.62
  5. Step 5: Solve for x
    x = 257,946,283.62/19,218.69
  6. Step 6: Final answer
    x = 13,421.64

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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.