Home / 30,338.18-45,490.14-12,558.80

Finding the Fourth Proportional to 30,338.18, 45,490.14 and 12,558.80

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Solution

The fourth proportional to 30,338.18, 45,490.14 and 12,558.80 is: 18,831.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,338.18 : 45,490.14 = 12,558.80 : x
  2. Step 2: Convert to fraction form
    30,338.18/45,490.14 = 12,558.80/x
  3. Step 3: Cross multiply
    30,338.18x = 45,490.14 × 12,558.80
  4. Step 4: Simplify right side
    30,338.18x = 571,301,570.23
  5. Step 5: Solve for x
    x = 571,301,570.23/30,338.18
  6. Step 6: Final answer
    x = 18,831.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.