Home / 15,355.12-21,177-12,370

Finding the Fourth Proportional to 15,355.12, 21,177 and 12,370

Calculator

Solution

The fourth proportional to 15,355.12, 21,177 and 12,370 is: 17,060.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.12 : 21,177 = 12,370 : x
  2. Step 2: Convert to fraction form
    15,355.12/21,177 = 12,370/x
  3. Step 3: Cross multiply
    15,355.12x = 21,177 × 12,370
  4. Step 4: Simplify right side
    15,355.12x = 261,959,490
  5. Step 5: Solve for x
    x = 261,959,490/15,355.12
  6. Step 6: Final answer
    x = 17,060.07

Related Problems

Find fourth proportional to 7,677.56, 10,588.50 and 6,185
Half scale
Find fourth proportional to 30,710.24, 42,354 and 24,740
Double scale
Find fourth proportional to 15,356.12, 21,178.38 and 12,371
Similar ratio
Find fourth proportional to 23,032.68, 31,765.50 and 18,555
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.