Home / 28,074.93-42,078.56-10,291.20

Finding the Fourth Proportional to 28,074.93, 42,078.56 and 10,291.20

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Solution

The fourth proportional to 28,074.93, 42,078.56 and 10,291.20 is: 15,424.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.93 : 42,078.56 = 10,291.20 : x
  2. Step 2: Convert to fraction form
    28,074.93/42,078.56 = 10,291.20/x
  3. Step 3: Cross multiply
    28,074.93x = 42,078.56 × 10,291.20
  4. Step 4: Simplify right side
    28,074.93x = 433,038,990.95
  5. Step 5: Solve for x
    x = 433,038,990.95/28,074.93
  6. Step 6: Final answer
    x = 15,424.40

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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.