Home / 28,322.16-39,068.64-16,988.64

Finding the Fourth Proportional to 28,322.16, 39,068.64 and 16,988.64

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Solution

The fourth proportional to 28,322.16, 39,068.64 and 16,988.64 is: 23,434.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,322.16 : 39,068.64 = 16,988.64 : x
  2. Step 2: Convert to fraction form
    28,322.16/39,068.64 = 16,988.64/x
  3. Step 3: Cross multiply
    28,322.16x = 39,068.64 × 16,988.64
  4. Step 4: Simplify right side
    28,322.16x = 663,723,060.25
  5. Step 5: Solve for x
    x = 663,723,060.25/28,322.16
  6. Step 6: Final answer
    x = 23,434.76

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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.