Home / 15,639.81-21,586.74-9,667.89

Finding the Fourth Proportional to 15,639.81, 21,586.74 and 9,667.89

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Solution

The fourth proportional to 15,639.81, 21,586.74 and 9,667.89 is: 13,344.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.81 : 21,586.74 = 9,667.89 : x
  2. Step 2: Convert to fraction form
    15,639.81/21,586.74 = 9,667.89/x
  3. Step 3: Cross multiply
    15,639.81x = 21,586.74 × 9,667.89
  4. Step 4: Simplify right side
    15,639.81x = 208,698,227.78
  5. Step 5: Solve for x
    x = 208,698,227.78/15,639.81
  6. Step 6: Final answer
    x = 13,344.04

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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.