Home / 39,878.20-59,825.40-13,585.60

Finding the Fourth Proportional to 39,878.20, 59,825.40 and 13,585.60

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Solution

The fourth proportional to 39,878.20, 59,825.40 and 13,585.60 is: 20,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,878.20 : 59,825.40 = 13,585.60 : x
  2. Step 2: Convert to fraction form
    39,878.20/59,825.40 = 13,585.60/x
  3. Step 3: Cross multiply
    39,878.20x = 59,825.40 × 13,585.60
  4. Step 4: Simplify right side
    39,878.20x = 812,763,954.24
  5. Step 5: Solve for x
    x = 812,763,954.24/39,878.20
  6. Step 6: Final answer
    x = 20,381.16

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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.