Home / 28,778.10-39,715.60-17,448.68

Finding the Fourth Proportional to 28,778.10, 39,715.60 and 17,448.68

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Solution

The fourth proportional to 28,778.10, 39,715.60 and 17,448.68 is: 24,080.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.10 : 39,715.60 = 17,448.68 : x
  2. Step 2: Convert to fraction form
    28,778.10/39,715.60 = 17,448.68/x
  3. Step 3: Cross multiply
    28,778.10x = 39,715.60 × 17,448.68
  4. Step 4: Simplify right side
    28,778.10x = 692,984,795.41
  5. Step 5: Solve for x
    x = 692,984,795.41/28,778.10
  6. Step 6: Final answer
    x = 24,080.28

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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.