Home / 35,289-48,703.14-20,385

Finding the Fourth Proportional to 35,289, 48,703.14 and 20,385

Calculator

Solution

The fourth proportional to 35,289, 48,703.14 and 20,385 is: 28,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,289 : 48,703.14 = 20,385 : x
  2. Step 2: Convert to fraction form
    35,289/48,703.14 = 20,385/x
  3. Step 3: Cross multiply
    35,289x = 48,703.14 × 20,385
  4. Step 4: Simplify right side
    35,289x = 992,813,508.90
  5. Step 5: Solve for x
    x = 992,813,508.90/35,289
  6. Step 6: Final answer
    x = 28,133.80

Related Problems

Find fourth proportional to 17,644.50, 24,351.57 and 10,192.50
Half scale
Find fourth proportional to 70,578, 97,406.28 and 40,770
Double scale
Find fourth proportional to 35,290, 48,704.52 and 20,386
Similar ratio
Find fourth proportional to 52,933.50, 73,054.71 and 30,577.50
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.