Home / 28,395.44-39,186.18-15,820.16

Finding the Fourth Proportional to 28,395.44, 39,186.18 and 15,820.16

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Solution

The fourth proportional to 28,395.44, 39,186.18 and 15,820.16 is: 21,832.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395.44 : 39,186.18 = 15,820.16 : x
  2. Step 2: Convert to fraction form
    28,395.44/39,186.18 = 15,820.16/x
  3. Step 3: Cross multiply
    28,395.44x = 39,186.18 × 15,820.16
  4. Step 4: Simplify right side
    28,395.44x = 619,931,637.39
  5. Step 5: Solve for x
    x = 619,931,637.39/28,395.44
  6. Step 6: Final answer
    x = 21,832.08

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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.