Home / 28,613.63-42,912.25-9,888.77

Finding the Fourth Proportional to 28,613.63, 42,912.25 and 9,888.77

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Solution

The fourth proportional to 28,613.63, 42,912.25 and 9,888.77 is: 14,830.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.63 : 42,912.25 = 9,888.77 : x
  2. Step 2: Convert to fraction form
    28,613.63/42,912.25 = 9,888.77/x
  3. Step 3: Cross multiply
    28,613.63x = 42,912.25 × 9,888.77
  4. Step 4: Simplify right side
    28,613.63x = 424,349,370.43
  5. Step 5: Solve for x
    x = 424,349,370.43/28,613.63
  6. Step 6: Final answer
    x = 14,830.32

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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.