Home / 51,856-77,784-14,920

Finding the Fourth Proportional to 51,856, 77,784 and 14,920

Calculator

Solution

The fourth proportional to 51,856, 77,784 and 14,920 is: 22,380

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,856 : 77,784 = 14,920 : x
  2. Step 2: Convert to fraction form
    51,856/77,784 = 14,920/x
  3. Step 3: Cross multiply
    51,856x = 77,784 × 14,920
  4. Step 4: Simplify right side
    51,856x = 1,160,537,280
  5. Step 5: Solve for x
    x = 1,160,537,280/51,856
  6. Step 6: Final answer
    x = 22,380

Related Problems

Find fourth proportional to 25,928, 38,892 and 7,460
Half scale
Find fourth proportional to 103,712, 155,568 and 29,840
Double scale
Find fourth proportional to 51,857, 77,785.50 and 14,921
Similar ratio
Find fourth proportional to 77,784, 116,676 and 22,380
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.