Home / 28,450.16-42,697.02-12,878.72

Finding the Fourth Proportional to 28,450.16, 42,697.02 and 12,878.72

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Solution

The fourth proportional to 28,450.16, 42,697.02 and 12,878.72 is: 19,327.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,450.16 : 42,697.02 = 12,878.72 : x
  2. Step 2: Convert to fraction form
    28,450.16/42,697.02 = 12,878.72/x
  3. Step 3: Cross multiply
    28,450.16x = 42,697.02 × 12,878.72
  4. Step 4: Simplify right side
    28,450.16x = 549,882,965.41
  5. Step 5: Solve for x
    x = 549,882,965.41/28,450.16
  6. Step 6: Final answer
    x = 19,327.94

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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.