Home / 30,401.80-45,639.15-17,085.40

Finding the Fourth Proportional to 30,401.80, 45,639.15 and 17,085.40

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Solution

The fourth proportional to 30,401.80, 45,639.15 and 17,085.40 is: 25,648.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,401.80 : 45,639.15 = 17,085.40 : x
  2. Step 2: Convert to fraction form
    30,401.80/45,639.15 = 17,085.40/x
  3. Step 3: Cross multiply
    30,401.80x = 45,639.15 × 17,085.40
  4. Step 4: Simplify right side
    30,401.80x = 779,763,133.41
  5. Step 5: Solve for x
    x = 779,763,133.41/30,401.80
  6. Step 6: Final answer
    x = 25,648.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.