Home / 30,858.65-42,584.06-18,283.40

Finding the Fourth Proportional to 30,858.65, 42,584.06 and 18,283.40

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Solution

The fourth proportional to 30,858.65, 42,584.06 and 18,283.40 is: 25,230.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,858.65 : 42,584.06 = 18,283.40 : x
  2. Step 2: Convert to fraction form
    30,858.65/42,584.06 = 18,283.40/x
  3. Step 3: Cross multiply
    30,858.65x = 42,584.06 × 18,283.40
  4. Step 4: Simplify right side
    30,858.65x = 778,581,395.08
  5. Step 5: Solve for x
    x = 778,581,395.08/30,858.65
  6. Step 6: Final answer
    x = 25,230.57

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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.