Home / 21,615.69-29,829.15-12,184.32

Finding the Fourth Proportional to 21,615.69, 29,829.15 and 12,184.32

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Solution

The fourth proportional to 21,615.69, 29,829.15 and 12,184.32 is: 16,814.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.69 : 29,829.15 = 12,184.32 : x
  2. Step 2: Convert to fraction form
    21,615.69/29,829.15 = 12,184.32/x
  3. Step 3: Cross multiply
    21,615.69x = 29,829.15 × 12,184.32
  4. Step 4: Simplify right side
    21,615.69x = 363,447,908.93
  5. Step 5: Solve for x
    x = 363,447,908.93/21,615.69
  6. Step 6: Final answer
    x = 16,814.08

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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.