Home / 42,284-63,426-17,660

Finding the Fourth Proportional to 42,284, 63,426 and 17,660

Calculator

Solution

The fourth proportional to 42,284, 63,426 and 17,660 is: 26,490

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,284 : 63,426 = 17,660 : x
  2. Step 2: Convert to fraction form
    42,284/63,426 = 17,660/x
  3. Step 3: Cross multiply
    42,284x = 63,426 × 17,660
  4. Step 4: Simplify right side
    42,284x = 1,120,103,160
  5. Step 5: Solve for x
    x = 1,120,103,160/42,284
  6. Step 6: Final answer
    x = 26,490

Related Problems

Find fourth proportional to 21,142, 31,713 and 8,830
Half scale
Find fourth proportional to 84,568, 126,852 and 35,320
Double scale
Find fourth proportional to 42,285, 63,427.50 and 17,661
Similar ratio
Find fourth proportional to 63,426, 95,139 and 26,490
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.