Home / 9,719.60-13,642-9,719.60

Finding the Fourth Proportional to 9,719.60, 13,642 and 9,719.60

Calculator

Solution

The fourth proportional to 9,719.60, 13,642 and 9,719.60 is: 13,642

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,719.60 : 13,642 = 9,719.60 : x
  2. Step 2: Convert to fraction form
    9,719.60/13,642 = 9,719.60/x
  3. Step 3: Cross multiply
    9,719.60x = 13,642 × 9,719.60
  4. Step 4: Simplify right side
    9,719.60x = 132,594,783.20
  5. Step 5: Solve for x
    x = 132,594,783.20/9,719.60
  6. Step 6: Final answer
    x = 13,642

Related Problems

Find fourth proportional to 4,859.80, 6,821 and 4,859.80
Half scale
Find fourth proportional to 19,439.20, 27,284 and 19,439.20
Double scale
Find fourth proportional to 9,720.60, 13,643.40 and 9,720.60
Similar ratio
Find fourth proportional to 14,579.40, 20,463 and 14,579.40
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.