Home / 30,929.68-42,683.46-16,782.53

Finding the Fourth Proportional to 30,929.68, 42,683.46 and 16,782.53

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Solution

The fourth proportional to 30,929.68, 42,683.46 and 16,782.53 is: 23,160.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,929.68 : 42,683.46 = 16,782.53 : x
  2. Step 2: Convert to fraction form
    30,929.68/42,683.46 = 16,782.53/x
  3. Step 3: Cross multiply
    30,929.68x = 42,683.46 × 16,782.53
  4. Step 4: Simplify right side
    30,929.68x = 716,336,447.95
  5. Step 5: Solve for x
    x = 716,336,447.95/30,929.68
  6. Step 6: Final answer
    x = 23,160.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.