Home / 28,762.64-39,688.80-16,823.60

Finding the Fourth Proportional to 28,762.64, 39,688.80 and 16,823.60

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Solution

The fourth proportional to 28,762.64, 39,688.80 and 16,823.60 is: 23,214.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762.64 : 39,688.80 = 16,823.60 : x
  2. Step 2: Convert to fraction form
    28,762.64/39,688.80 = 16,823.60/x
  3. Step 3: Cross multiply
    28,762.64x = 39,688.80 × 16,823.60
  4. Step 4: Simplify right side
    28,762.64x = 667,708,495.68
  5. Step 5: Solve for x
    x = 667,708,495.68/28,762.64
  6. Step 6: Final answer
    x = 23,214.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.