Home / 30,480.08-42,069.08-18,547.25

Finding the Fourth Proportional to 30,480.08, 42,069.08 and 18,547.25

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Solution

The fourth proportional to 30,480.08, 42,069.08 and 18,547.25 is: 25,599.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.08 : 42,069.08 = 18,547.25 : x
  2. Step 2: Convert to fraction form
    30,480.08/42,069.08 = 18,547.25/x
  3. Step 3: Cross multiply
    30,480.08x = 42,069.08 × 18,547.25
  4. Step 4: Simplify right side
    30,480.08x = 780,265,895.57
  5. Step 5: Solve for x
    x = 780,265,895.57/30,480.08
  6. Step 6: Final answer
    x = 25,599.21

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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.