Home / 19,160-28,740-5,309

Finding the Fourth Proportional to 19,160, 28,740 and 5,309

Calculator

Solution

The fourth proportional to 19,160, 28,740 and 5,309 is: 7,963.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,160 : 28,740 = 5,309 : x
  2. Step 2: Convert to fraction form
    19,160/28,740 = 5,309/x
  3. Step 3: Cross multiply
    19,160x = 28,740 × 5,309
  4. Step 4: Simplify right side
    19,160x = 152,580,660
  5. Step 5: Solve for x
    x = 152,580,660/19,160
  6. Step 6: Final answer
    x = 7,963.50

Related Problems

Find fourth proportional to 9,580, 14,370 and 2,654.50
Half scale
Find fourth proportional to 38,320, 57,480 and 10,618
Double scale
Find fourth proportional to 19,161, 28,741.50 and 5,310
Similar ratio
Find fourth proportional to 28,740, 43,110 and 7,963.50
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.