Home / 28,177.95-42,271.05-8,458.07

Finding the Fourth Proportional to 28,177.95, 42,271.05 and 8,458.07

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Solution

The fourth proportional to 28,177.95, 42,271.05 and 8,458.07 is: 12,688.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.95 : 42,271.05 = 8,458.07 : x
  2. Step 2: Convert to fraction form
    28,177.95/42,271.05 = 8,458.07/x
  3. Step 3: Cross multiply
    28,177.95x = 42,271.05 × 8,458.07
  4. Step 4: Simplify right side
    28,177.95x = 357,531,499.87
  5. Step 5: Solve for x
    x = 357,531,499.87/28,177.95
  6. Step 6: Final answer
    x = 12,688.34

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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.