Home / 28,187.04-38,897.84-15,440.32

Finding the Fourth Proportional to 28,187.04, 38,897.84 and 15,440.32

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Solution

The fourth proportional to 28,187.04, 38,897.84 and 15,440.32 is: 21,307.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.04 : 38,897.84 = 15,440.32 : x
  2. Step 2: Convert to fraction form
    28,187.04/38,897.84 = 15,440.32/x
  3. Step 3: Cross multiply
    28,187.04x = 38,897.84 × 15,440.32
  4. Step 4: Simplify right side
    28,187.04x = 600,595,096.91
  5. Step 5: Solve for x
    x = 600,595,096.91/28,187.04
  6. Step 6: Final answer
    x = 21,307.49

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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.