Home / 28,035.84-38,705.28-18,617.28

Finding the Fourth Proportional to 28,035.84, 38,705.28 and 18,617.28

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Solution

The fourth proportional to 28,035.84, 38,705.28 and 18,617.28 is: 25,702.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,035.84 : 38,705.28 = 18,617.28 : x
  2. Step 2: Convert to fraction form
    28,035.84/38,705.28 = 18,617.28/x
  3. Step 3: Cross multiply
    28,035.84x = 38,705.28 × 18,617.28
  4. Step 4: Simplify right side
    28,035.84x = 720,587,035.24
  5. Step 5: Solve for x
    x = 720,587,035.24/28,035.84
  6. Step 6: Final answer
    x = 25,702.35

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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.