Home / 19,821.60-29,732.40-18,946.80

Finding the Fourth Proportional to 19,821.60, 29,732.40 and 18,946.80

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Solution

The fourth proportional to 19,821.60, 29,732.40 and 18,946.80 is: 28,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.60 : 29,732.40 = 18,946.80 : x
  2. Step 2: Convert to fraction form
    19,821.60/29,732.40 = 18,946.80/x
  3. Step 3: Cross multiply
    19,821.60x = 29,732.40 × 18,946.80
  4. Step 4: Simplify right side
    19,821.60x = 563,333,836.32
  5. Step 5: Solve for x
    x = 563,333,836.32/19,821.60
  6. Step 6: Final answer
    x = 28,420.20

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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.