Home / 28,415.64-39,210.84-16,479.75

Finding the Fourth Proportional to 28,415.64, 39,210.84 and 16,479.75

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Solution

The fourth proportional to 28,415.64, 39,210.84 and 16,479.75 is: 22,740.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,415.64 : 39,210.84 = 16,479.75 : x
  2. Step 2: Convert to fraction form
    28,415.64/39,210.84 = 16,479.75/x
  3. Step 3: Cross multiply
    28,415.64x = 39,210.84 × 16,479.75
  4. Step 4: Simplify right side
    28,415.64x = 646,184,840.49
  5. Step 5: Solve for x
    x = 646,184,840.49/28,415.64
  6. Step 6: Final answer
    x = 22,740.46

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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.