Home / 19,270-28,905-4,678

Finding the Fourth Proportional to 19,270, 28,905 and 4,678

Calculator

Solution

The fourth proportional to 19,270, 28,905 and 4,678 is: 7,017

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,270 : 28,905 = 4,678 : x
  2. Step 2: Convert to fraction form
    19,270/28,905 = 4,678/x
  3. Step 3: Cross multiply
    19,270x = 28,905 × 4,678
  4. Step 4: Simplify right side
    19,270x = 135,217,590
  5. Step 5: Solve for x
    x = 135,217,590/19,270
  6. Step 6: Final answer
    x = 7,017

Related Problems

Find fourth proportional to 9,635, 14,452.50 and 2,339
Half scale
Find fourth proportional to 38,540, 57,810 and 9,356
Double scale
Find fourth proportional to 19,271, 28,906.50 and 4,679
Similar ratio
Find fourth proportional to 28,905, 43,357.50 and 7,017
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.