Home / 15,405.42-21,258.27-8,692.68

Finding the Fourth Proportional to 15,405.42, 21,258.27 and 8,692.68

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Solution

The fourth proportional to 15,405.42, 21,258.27 and 8,692.68 is: 11,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.42 : 21,258.27 = 8,692.68 : x
  2. Step 2: Convert to fraction form
    15,405.42/21,258.27 = 8,692.68/x
  3. Step 3: Cross multiply
    15,405.42x = 21,258.27 × 8,692.68
  4. Step 4: Simplify right side
    15,405.42x = 184,791,338.46
  5. Step 5: Solve for x
    x = 184,791,338.46/15,405.42
  6. Step 6: Final answer
    x = 11,995.22

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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.