Home / 15,950.32-21,986.16-12,587.68

Finding the Fourth Proportional to 15,950.32, 21,986.16 and 12,587.68

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Solution

The fourth proportional to 15,950.32, 21,986.16 and 12,587.68 is: 17,351.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,950.32 : 21,986.16 = 12,587.68 : x
  2. Step 2: Convert to fraction form
    15,950.32/21,986.16 = 12,587.68/x
  3. Step 3: Cross multiply
    15,950.32x = 21,986.16 × 12,587.68
  4. Step 4: Simplify right side
    15,950.32x = 276,754,746.51
  5. Step 5: Solve for x
    x = 276,754,746.51/15,950.32
  6. Step 6: Final answer
    x = 17,351.05

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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.