Home / 31,030.14-42,823.11-18,287.10

Finding the Fourth Proportional to 31,030.14, 42,823.11 and 18,287.10

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Solution

The fourth proportional to 31,030.14, 42,823.11 and 18,287.10 is: 25,237.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,030.14 : 42,823.11 = 18,287.10 : x
  2. Step 2: Convert to fraction form
    31,030.14/42,823.11 = 18,287.10/x
  3. Step 3: Cross multiply
    31,030.14x = 42,823.11 × 18,287.10
  4. Step 4: Simplify right side
    31,030.14x = 783,110,494.88
  5. Step 5: Solve for x
    x = 783,110,494.88/31,030.14
  6. Step 6: Final answer
    x = 25,237.09

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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.