Home / 30,934.81-42,690.14-16,787.65

Finding the Fourth Proportional to 30,934.81, 42,690.14 and 16,787.65

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Solution

The fourth proportional to 30,934.81, 42,690.14 and 16,787.65 is: 23,167.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.81 : 42,690.14 = 16,787.65 : x
  2. Step 2: Convert to fraction form
    30,934.81/42,690.14 = 16,787.65/x
  3. Step 3: Cross multiply
    30,934.81x = 42,690.14 × 16,787.65
  4. Step 4: Simplify right side
    30,934.81x = 716,667,128.77
  5. Step 5: Solve for x
    x = 716,667,128.77/30,934.81
  6. Step 6: Final answer
    x = 23,167.01

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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.