Home / 12,985.44-19,482.80-4,220.39

Finding the Fourth Proportional to 12,985.44, 19,482.80 and 4,220.39

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Solution

The fourth proportional to 12,985.44, 19,482.80 and 4,220.39 is: 6,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.44 : 19,482.80 = 4,220.39 : x
  2. Step 2: Convert to fraction form
    12,985.44/19,482.80 = 4,220.39/x
  3. Step 3: Cross multiply
    12,985.44x = 19,482.80 × 4,220.39
  4. Step 4: Simplify right side
    12,985.44x = 82,224,895.78
  5. Step 5: Solve for x
    x = 82,224,895.78/12,985.44
  6. Step 6: Final answer
    x = 6,332.08

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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.