Home / 12,459.42-18,692.28-4,139.48

Finding the Fourth Proportional to 12,459.42, 18,692.28 and 4,139.48

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Solution

The fourth proportional to 12,459.42, 18,692.28 and 4,139.48 is: 6,210.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.42 : 18,692.28 = 4,139.48 : x
  2. Step 2: Convert to fraction form
    12,459.42/18,692.28 = 4,139.48/x
  3. Step 3: Cross multiply
    12,459.42x = 18,692.28 × 4,139.48
  4. Step 4: Simplify right side
    12,459.42x = 77,376,290.67
  5. Step 5: Solve for x
    x = 77,376,290.67/12,459.42
  6. Step 6: Final answer
    x = 6,210.26

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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.