Home / 27,801.85-38,369.30-15,866.98

Finding the Fourth Proportional to 27,801.85, 38,369.30 and 15,866.98

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Solution

The fourth proportional to 27,801.85, 38,369.30 and 15,866.98 is: 21,898.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,801.85 : 38,369.30 = 15,866.98 : x
  2. Step 2: Convert to fraction form
    27,801.85/38,369.30 = 15,866.98/x
  3. Step 3: Cross multiply
    27,801.85x = 38,369.30 × 15,866.98
  4. Step 4: Simplify right side
    27,801.85x = 608,804,915.71
  5. Step 5: Solve for x
    x = 608,804,915.71/27,801.85
  6. Step 6: Final answer
    x = 21,898.00

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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.