Home / 28,312.16-39,071.52-15,392.30

Finding the Fourth Proportional to 28,312.16, 39,071.52 and 15,392.30

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Solution

The fourth proportional to 28,312.16, 39,071.52 and 15,392.30 is: 21,241.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,312.16 : 39,071.52 = 15,392.30 : x
  2. Step 2: Convert to fraction form
    28,312.16/39,071.52 = 15,392.30/x
  3. Step 3: Cross multiply
    28,312.16x = 39,071.52 × 15,392.30
  4. Step 4: Simplify right side
    28,312.16x = 601,400,557.30
  5. Step 5: Solve for x
    x = 601,400,557.30/28,312.16
  6. Step 6: Final answer
    x = 21,241.78

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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.