Home / 15,886.40-23,859.21-13,987.38

Finding the Fourth Proportional to 15,886.40, 23,859.21 and 13,987.38

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Solution

The fourth proportional to 15,886.40, 23,859.21 and 13,987.38 is: 21,007.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,886.40 : 23,859.21 = 13,987.38 : x
  2. Step 2: Convert to fraction form
    15,886.40/23,859.21 = 13,987.38/x
  3. Step 3: Cross multiply
    15,886.40x = 23,859.21 × 13,987.38
  4. Step 4: Simplify right side
    15,886.40x = 333,727,900.02
  5. Step 5: Solve for x
    x = 333,727,900.02/15,886.40
  6. Step 6: Final answer
    x = 21,007.14

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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.