Home / 12,987.28-19,494.70-10,551.51

Finding the Fourth Proportional to 12,987.28, 19,494.70 and 10,551.51

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Solution

The fourth proportional to 12,987.28, 19,494.70 and 10,551.51 is: 15,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987.28 : 19,494.70 = 10,551.51 : x
  2. Step 2: Convert to fraction form
    12,987.28/19,494.70 = 10,551.51/x
  3. Step 3: Cross multiply
    12,987.28x = 19,494.70 × 10,551.51
  4. Step 4: Simplify right side
    12,987.28x = 205,698,522.00
  5. Step 5: Solve for x
    x = 205,698,522.00/12,987.28
  6. Step 6: Final answer
    x = 15,838.46

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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.