Home / 15,888.35-21,875.67-13,493.18

Finding the Fourth Proportional to 15,888.35, 21,875.67 and 13,493.18

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Solution

The fourth proportional to 15,888.35, 21,875.67 and 13,493.18 is: 18,577.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,888.35 : 21,875.67 = 13,493.18 : x
  2. Step 2: Convert to fraction form
    15,888.35/21,875.67 = 13,493.18/x
  3. Step 3: Cross multiply
    15,888.35x = 21,875.67 × 13,493.18
  4. Step 4: Simplify right side
    15,888.35x = 295,172,407.62
  5. Step 5: Solve for x
    x = 295,172,407.62/15,888.35
  6. Step 6: Final answer
    x = 18,577.91

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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.