Home / 74,688.32-112,032.48-19,280

Finding the Fourth Proportional to 74,688.32, 112,032.48 and 19,280

Calculator

Solution

The fourth proportional to 74,688.32, 112,032.48 and 19,280 is: 28,920

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,688.32 : 112,032.48 = 19,280 : x
  2. Step 2: Convert to fraction form
    74,688.32/112,032.48 = 19,280/x
  3. Step 3: Cross multiply
    74,688.32x = 112,032.48 × 19,280
  4. Step 4: Simplify right side
    74,688.32x = 2,159,986,214.40
  5. Step 5: Solve for x
    x = 2,159,986,214.40/74,688.32
  6. Step 6: Final answer
    x = 28,920

Related Problems

Find fourth proportional to 37,344.16, 56,016.24 and 9,640
Half scale
Find fourth proportional to 149,376.64, 224,064.96 and 38,560
Double scale
Find fourth proportional to 74,689.32, 112,033.98 and 19,281
Similar ratio
Find fourth proportional to 112,032.48, 168,048.72 and 28,920
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.