Home / 19,148.40-28,722.60-9,784.80

Finding the Fourth Proportional to 19,148.40, 28,722.60 and 9,784.80

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Solution

The fourth proportional to 19,148.40, 28,722.60 and 9,784.80 is: 14,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,148.40 : 28,722.60 = 9,784.80 : x
  2. Step 2: Convert to fraction form
    19,148.40/28,722.60 = 9,784.80/x
  3. Step 3: Cross multiply
    19,148.40x = 28,722.60 × 9,784.80
  4. Step 4: Simplify right side
    19,148.40x = 281,044,896.48
  5. Step 5: Solve for x
    x = 281,044,896.48/19,148.40
  6. Step 6: Final answer
    x = 14,677.20

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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.