Home / 28,778.64-39,715.08-17,445.36

Finding the Fourth Proportional to 28,778.64, 39,715.08 and 17,445.36

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Solution

The fourth proportional to 28,778.64, 39,715.08 and 17,445.36 is: 24,074.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778.64 : 39,715.08 = 17,445.36 : x
  2. Step 2: Convert to fraction form
    28,778.64/39,715.08 = 17,445.36/x
  3. Step 3: Cross multiply
    28,778.64x = 39,715.08 × 17,445.36
  4. Step 4: Simplify right side
    28,778.64x = 692,843,868.03
  5. Step 5: Solve for x
    x = 692,843,868.03/28,778.64
  6. Step 6: Final answer
    x = 24,074.93

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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.