Home / 28,335.45-39,102.08-15,588.62

Finding the Fourth Proportional to 28,335.45, 39,102.08 and 15,588.62

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Solution

The fourth proportional to 28,335.45, 39,102.08 and 15,588.62 is: 21,511.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.45 : 39,102.08 = 15,588.62 : x
  2. Step 2: Convert to fraction form
    28,335.45/39,102.08 = 15,588.62/x
  3. Step 3: Cross multiply
    28,335.45x = 39,102.08 × 15,588.62
  4. Step 4: Simplify right side
    28,335.45x = 609,547,192.88
  5. Step 5: Solve for x
    x = 609,547,192.88/28,335.45
  6. Step 6: Final answer
    x = 21,511.82

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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.