Home / 30,969.60-42,734.16-25,643.04

Finding the Fourth Proportional to 30,969.60, 42,734.16 and 25,643.04

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Solution

The fourth proportional to 30,969.60, 42,734.16 and 25,643.04 is: 35,384.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,969.60 : 42,734.16 = 25,643.04 : x
  2. Step 2: Convert to fraction form
    30,969.60/42,734.16 = 25,643.04/x
  3. Step 3: Cross multiply
    30,969.60x = 42,734.16 × 25,643.04
  4. Step 4: Simplify right side
    30,969.60x = 1,095,833,774.25
  5. Step 5: Solve for x
    x = 1,095,833,774.25/30,969.60
  6. Step 6: Final answer
    x = 35,384.18

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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.