Home / 28,176.95-42,269.55-8,457.07

Finding the Fourth Proportional to 28,176.95, 42,269.55 and 8,457.07

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Solution

The fourth proportional to 28,176.95, 42,269.55 and 8,457.07 is: 12,686.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.95 : 42,269.55 = 8,457.07 : x
  2. Step 2: Convert to fraction form
    28,176.95/42,269.55 = 8,457.07/x
  3. Step 3: Cross multiply
    28,176.95x = 42,269.55 × 8,457.07
  4. Step 4: Simplify right side
    28,176.95x = 357,476,543.22
  5. Step 5: Solve for x
    x = 357,476,543.22/28,176.95
  6. Step 6: Final answer
    x = 12,686.84

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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.