Home / 18,975-28,462.50-5,124

Finding the Fourth Proportional to 18,975, 28,462.50 and 5,124

Calculator

Solution

The fourth proportional to 18,975, 28,462.50 and 5,124 is: 7,686

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975 : 28,462.50 = 5,124 : x
  2. Step 2: Convert to fraction form
    18,975/28,462.50 = 5,124/x
  3. Step 3: Cross multiply
    18,975x = 28,462.50 × 5,124
  4. Step 4: Simplify right side
    18,975x = 145,841,850
  5. Step 5: Solve for x
    x = 145,841,850/18,975
  6. Step 6: Final answer
    x = 7,686

Related Problems

Find fourth proportional to 9,487.50, 14,231.25 and 2,562
Half scale
Find fourth proportional to 37,950, 56,925 and 10,248
Double scale
Find fourth proportional to 18,976, 28,464 and 5,125
Similar ratio
Find fourth proportional to 28,462.50, 42,693.75 and 7,686
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.