Home / 28,188.04-38,897.98-15,440.56

Finding the Fourth Proportional to 28,188.04, 38,897.98 and 15,440.56

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Solution

The fourth proportional to 28,188.04, 38,897.98 and 15,440.56 is: 21,307.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.04 : 38,897.98 = 15,440.56 : x
  2. Step 2: Convert to fraction form
    28,188.04/38,897.98 = 15,440.56/x
  3. Step 3: Cross multiply
    28,188.04x = 38,897.98 × 15,440.56
  4. Step 4: Simplify right side
    28,188.04x = 600,606,594.07
  5. Step 5: Solve for x
    x = 600,606,594.07/28,188.04
  6. Step 6: Final answer
    x = 21,307.14

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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.