Home / 28,415.15-42,648.93-14,385.12

Finding the Fourth Proportional to 28,415.15, 42,648.93 and 14,385.12

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Solution

The fourth proportional to 28,415.15, 42,648.93 and 14,385.12 is: 21,590.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,415.15 : 42,648.93 = 14,385.12 : x
  2. Step 2: Convert to fraction form
    28,415.15/42,648.93 = 14,385.12/x
  3. Step 3: Cross multiply
    28,415.15x = 42,648.93 × 14,385.12
  4. Step 4: Simplify right side
    28,415.15x = 613,510,071.68
  5. Step 5: Solve for x
    x = 613,510,071.68/28,415.15
  6. Step 6: Final answer
    x = 21,590.95

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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.