Home / 16,478.12-22,741.40-9,405.60

Finding the Fourth Proportional to 16,478.12, 22,741.40 and 9,405.60

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Solution

The fourth proportional to 16,478.12, 22,741.40 and 9,405.60 is: 12,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,478.12 : 22,741.40 = 9,405.60 : x
  2. Step 2: Convert to fraction form
    16,478.12/22,741.40 = 9,405.60/x
  3. Step 3: Cross multiply
    16,478.12x = 22,741.40 × 9,405.60
  4. Step 4: Simplify right side
    16,478.12x = 213,896,511.84
  5. Step 5: Solve for x
    x = 213,896,511.84/16,478.12
  6. Step 6: Final answer
    x = 12,980.64

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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.