Home / 15,628.42-21,567.18-8,554.78

Finding the Fourth Proportional to 15,628.42, 21,567.18 and 8,554.78

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Solution

The fourth proportional to 15,628.42, 21,567.18 and 8,554.78 is: 11,805.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.42 : 21,567.18 = 8,554.78 : x
  2. Step 2: Convert to fraction form
    15,628.42/21,567.18 = 8,554.78/x
  3. Step 3: Cross multiply
    15,628.42x = 21,567.18 × 8,554.78
  4. Step 4: Simplify right side
    15,628.42x = 184,502,480.12
  5. Step 5: Solve for x
    x = 184,502,480.12/15,628.42
  6. Step 6: Final answer
    x = 11,805.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.