Home / 64,692-97,038-20,916

Finding the Fourth Proportional to 64,692, 97,038 and 20,916

Calculator

Solution

The fourth proportional to 64,692, 97,038 and 20,916 is: 31,374

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,692 : 97,038 = 20,916 : x
  2. Step 2: Convert to fraction form
    64,692/97,038 = 20,916/x
  3. Step 3: Cross multiply
    64,692x = 97,038 × 20,916
  4. Step 4: Simplify right side
    64,692x = 2,029,646,808
  5. Step 5: Solve for x
    x = 2,029,646,808/64,692
  6. Step 6: Final answer
    x = 31,374

Related Problems

Find fourth proportional to 32,346, 48,519 and 10,458
Half scale
Find fourth proportional to 129,384, 194,076 and 41,832
Double scale
Find fourth proportional to 64,693, 97,039.50 and 20,917
Similar ratio
Find fourth proportional to 97,038, 145,557 and 31,374
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.