Home / 12,945.80-19,418.70-5,925.80

Finding the Fourth Proportional to 12,945.80, 19,418.70 and 5,925.80

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Solution

The fourth proportional to 12,945.80, 19,418.70 and 5,925.80 is: 8,888.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.80 : 19,418.70 = 5,925.80 : x
  2. Step 2: Convert to fraction form
    12,945.80/19,418.70 = 5,925.80/x
  3. Step 3: Cross multiply
    12,945.80x = 19,418.70 × 5,925.80
  4. Step 4: Simplify right side
    12,945.80x = 115,071,332.46
  5. Step 5: Solve for x
    x = 115,071,332.46/12,945.80
  6. Step 6: Final answer
    x = 8,888.70

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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.