Home / 38,710.78-53,421.45-21,718.78

Finding the Fourth Proportional to 38,710.78, 53,421.45 and 21,718.78

Calculator

Solution

The fourth proportional to 38,710.78, 53,421.45 and 21,718.78 is: 29,972.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,710.78 : 53,421.45 = 21,718.78 : x
  2. Step 2: Convert to fraction form
    38,710.78/53,421.45 = 21,718.78/x
  3. Step 3: Cross multiply
    38,710.78x = 53,421.45 × 21,718.78
  4. Step 4: Simplify right side
    38,710.78x = 1,160,248,452.72
  5. Step 5: Solve for x
    x = 1,160,248,452.72/38,710.78
  6. Step 6: Final answer
    x = 29,972.24

Related Problems

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.