Home / 28,862.40-39,830.64-16,284.72

Finding the Fourth Proportional to 28,862.40, 39,830.64 and 16,284.72

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Solution

The fourth proportional to 28,862.40, 39,830.64 and 16,284.72 is: 22,473.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,862.40 : 39,830.64 = 16,284.72 : x
  2. Step 2: Convert to fraction form
    28,862.40/39,830.64 = 16,284.72/x
  3. Step 3: Cross multiply
    28,862.40x = 39,830.64 × 16,284.72
  4. Step 4: Simplify right side
    28,862.40x = 648,630,819.82
  5. Step 5: Solve for x
    x = 648,630,819.82/28,862.40
  6. Step 6: Final answer
    x = 22,473.21

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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.