Home / 30,931.22-42,685.26-16,784.12

Finding the Fourth Proportional to 30,931.22, 42,685.26 and 16,784.12

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Solution

The fourth proportional to 30,931.22, 42,685.26 and 16,784.12 is: 23,162.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,931.22 : 42,685.26 = 16,784.12 : x
  2. Step 2: Convert to fraction form
    30,931.22/42,685.26 = 16,784.12/x
  3. Step 3: Cross multiply
    30,931.22x = 42,685.26 × 16,784.12
  4. Step 4: Simplify right side
    30,931.22x = 716,434,526.07
  5. Step 5: Solve for x
    x = 716,434,526.07/30,931.22
  6. Step 6: Final answer
    x = 23,162.18

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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.