Home / 15,639.05-21,585.69-9,667.13

Finding the Fourth Proportional to 15,639.05, 21,585.69 and 9,667.13

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Solution

The fourth proportional to 15,639.05, 21,585.69 and 9,667.13 is: 13,342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.05 : 21,585.69 = 9,667.13 : x
  2. Step 2: Convert to fraction form
    15,639.05/21,585.69 = 9,667.13/x
  3. Step 3: Cross multiply
    15,639.05x = 21,585.69 × 9,667.13
  4. Step 4: Simplify right side
    15,639.05x = 208,671,563.44
  5. Step 5: Solve for x
    x = 208,671,563.44/15,639.05
  6. Step 6: Final answer
    x = 13,342.98

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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.