Home / 28,207.16-42,310.64-12,613.84

Finding the Fourth Proportional to 28,207.16, 42,310.64 and 12,613.84

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Solution

The fourth proportional to 28,207.16, 42,310.64 and 12,613.84 is: 18,920.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,207.16 : 42,310.64 = 12,613.84 : x
  2. Step 2: Convert to fraction form
    28,207.16/42,310.64 = 12,613.84/x
  3. Step 3: Cross multiply
    28,207.16x = 42,310.64 × 12,613.84
  4. Step 4: Simplify right side
    28,207.16x = 533,699,643.26
  5. Step 5: Solve for x
    x = 533,699,643.26/28,207.16
  6. Step 6: Final answer
    x = 18,920.72

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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.