Home / 13,866.29-19,135.95-7,898.21

Finding the Fourth Proportional to 13,866.29, 19,135.95 and 7,898.21

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Solution

The fourth proportional to 13,866.29, 19,135.95 and 7,898.21 is: 10,899.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,866.29 : 19,135.95 = 7,898.21 : x
  2. Step 2: Convert to fraction form
    13,866.29/19,135.95 = 7,898.21/x
  3. Step 3: Cross multiply
    13,866.29x = 19,135.95 × 7,898.21
  4. Step 4: Simplify right side
    13,866.29x = 151,139,698.11
  5. Step 5: Solve for x
    x = 151,139,698.11/13,866.29
  6. Step 6: Final answer
    x = 10,899.79

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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.