Home / 28,455.91-42,682.95-12,873.53

Finding the Fourth Proportional to 28,455.91, 42,682.95 and 12,873.53

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Solution

The fourth proportional to 28,455.91, 42,682.95 and 12,873.53 is: 19,309.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455.91 : 42,682.95 = 12,873.53 : x
  2. Step 2: Convert to fraction form
    28,455.91/42,682.95 = 12,873.53/x
  3. Step 3: Cross multiply
    28,455.91x = 42,682.95 × 12,873.53
  4. Step 4: Simplify right side
    28,455.91x = 549,480,344.02
  5. Step 5: Solve for x
    x = 549,480,344.02/28,455.91
  6. Step 6: Final answer
    x = 19,309.89

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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.