Home / 15,637.76-21,589.44-13,888.16

Finding the Fourth Proportional to 15,637.76, 21,589.44 and 13,888.16

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Solution

The fourth proportional to 15,637.76, 21,589.44 and 13,888.16 is: 19,173.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637.76 : 21,589.44 = 13,888.16 : x
  2. Step 2: Convert to fraction form
    15,637.76/21,589.44 = 13,888.16/x
  3. Step 3: Cross multiply
    15,637.76x = 21,589.44 × 13,888.16
  4. Step 4: Simplify right side
    15,637.76x = 299,837,597.03
  5. Step 5: Solve for x
    x = 299,837,597.03/15,637.76
  6. Step 6: Final answer
    x = 19,173.95

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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.