Home / 21,045.39-31,569.47-7,004.85

Finding the Fourth Proportional to 21,045.39, 31,569.47 and 7,004.85

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Solution

The fourth proportional to 21,045.39, 31,569.47 and 7,004.85 is: 10,507.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.39 : 31,569.47 = 7,004.85 : x
  2. Step 2: Convert to fraction form
    21,045.39/31,569.47 = 7,004.85/x
  3. Step 3: Cross multiply
    21,045.39x = 31,569.47 × 7,004.85
  4. Step 4: Simplify right side
    21,045.39x = 221,139,274.79
  5. Step 5: Solve for x
    x = 221,139,274.79/21,045.39
  6. Step 6: Final answer
    x = 10,507.73

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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.