Home / 18,865.84-28,295.10-17,929.20

Finding the Fourth Proportional to 18,865.84, 28,295.10 and 17,929.20

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Solution

The fourth proportional to 18,865.84, 28,295.10 and 17,929.20 is: 26,890.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.84 : 28,295.10 = 17,929.20 : x
  2. Step 2: Convert to fraction form
    18,865.84/28,295.10 = 17,929.20/x
  3. Step 3: Cross multiply
    18,865.84x = 28,295.10 × 17,929.20
  4. Step 4: Simplify right side
    18,865.84x = 507,308,506.92
  5. Step 5: Solve for x
    x = 507,308,506.92/18,865.84
  6. Step 6: Final answer
    x = 26,890.32

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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.