Home / 30,923.79-42,671.22-17,312.57

Finding the Fourth Proportional to 30,923.79, 42,671.22 and 17,312.57

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Solution

The fourth proportional to 30,923.79, 42,671.22 and 17,312.57 is: 23,889.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,923.79 : 42,671.22 = 17,312.57 : x
  2. Step 2: Convert to fraction form
    30,923.79/42,671.22 = 17,312.57/x
  3. Step 3: Cross multiply
    30,923.79x = 42,671.22 × 17,312.57
  4. Step 4: Simplify right side
    30,923.79x = 738,748,483.24
  5. Step 5: Solve for x
    x = 738,748,483.24/30,923.79
  6. Step 6: Final answer
    x = 23,889.33

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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.