Home / 28,458.88-42,683.48-10,443.40

Finding the Fourth Proportional to 28,458.88, 42,683.48 and 10,443.40

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Solution

The fourth proportional to 28,458.88, 42,683.48 and 10,443.40 is: 15,663.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.88 : 42,683.48 = 10,443.40 : x
  2. Step 2: Convert to fraction form
    28,458.88/42,683.48 = 10,443.40/x
  3. Step 3: Cross multiply
    28,458.88x = 42,683.48 × 10,443.40
  4. Step 4: Simplify right side
    28,458.88x = 445,760,655.03
  5. Step 5: Solve for x
    x = 445,760,655.03/28,458.88
  6. Step 6: Final answer
    x = 15,663.32

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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.