Home / 30,921.16-42,671.28-16,774.00

Finding the Fourth Proportional to 30,921.16, 42,671.28 and 16,774.00

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Solution

The fourth proportional to 30,921.16, 42,671.28 and 16,774.00 is: 23,148.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,921.16 : 42,671.28 = 16,774.00 : x
  2. Step 2: Convert to fraction form
    30,921.16/42,671.28 = 16,774.00/x
  3. Step 3: Cross multiply
    30,921.16x = 42,671.28 × 16,774.00
  4. Step 4: Simplify right side
    30,921.16x = 715,768,032.60
  5. Step 5: Solve for x
    x = 715,768,032.60/30,921.16
  6. Step 6: Final answer
    x = 23,148.16

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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.