Home / 43,390-65,085-10,558

Finding the Fourth Proportional to 43,390, 65,085 and 10,558

Calculator

Solution

The fourth proportional to 43,390, 65,085 and 10,558 is: 15,837

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,390 : 65,085 = 10,558 : x
  2. Step 2: Convert to fraction form
    43,390/65,085 = 10,558/x
  3. Step 3: Cross multiply
    43,390x = 65,085 × 10,558
  4. Step 4: Simplify right side
    43,390x = 687,167,430
  5. Step 5: Solve for x
    x = 687,167,430/43,390
  6. Step 6: Final answer
    x = 15,837

Related Problems

Find fourth proportional to 21,695, 32,542.50 and 5,279
Half scale
Find fourth proportional to 86,780, 130,170 and 21,116
Double scale
Find fourth proportional to 43,391, 65,086.50 and 10,559
Similar ratio
Find fourth proportional to 65,085, 97,627.50 and 15,837
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.