Home / 21,630-32,445-5,214

Finding the Fourth Proportional to 21,630, 32,445 and 5,214

Calculator

Solution

The fourth proportional to 21,630, 32,445 and 5,214 is: 7,821

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630 : 32,445 = 5,214 : x
  2. Step 2: Convert to fraction form
    21,630/32,445 = 5,214/x
  3. Step 3: Cross multiply
    21,630x = 32,445 × 5,214
  4. Step 4: Simplify right side
    21,630x = 169,168,230
  5. Step 5: Solve for x
    x = 169,168,230/21,630
  6. Step 6: Final answer
    x = 7,821

Related Problems

Find fourth proportional to 10,815, 16,222.50 and 2,607
Half scale
Find fourth proportional to 43,260, 64,890 and 10,428
Double scale
Find fourth proportional to 21,631, 32,446.50 and 5,215
Similar ratio
Find fourth proportional to 32,445, 48,667.50 and 7,821
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.