Home / 28,213.16-42,326.73-19,909.40

Finding the Fourth Proportional to 28,213.16, 42,326.73 and 19,909.40

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Solution

The fourth proportional to 28,213.16, 42,326.73 and 19,909.40 is: 29,869.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.16 : 42,326.73 = 19,909.40 : x
  2. Step 2: Convert to fraction form
    28,213.16/42,326.73 = 19,909.40/x
  3. Step 3: Cross multiply
    28,213.16x = 42,326.73 × 19,909.40
  4. Step 4: Simplify right side
    28,213.16x = 842,699,586.63
  5. Step 5: Solve for x
    x = 842,699,586.63/28,213.16
  6. Step 6: Final answer
    x = 29,869.03

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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.