Home / 28,056.06-38,717.78-15,309.90

Finding the Fourth Proportional to 28,056.06, 38,717.78 and 15,309.90

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Solution

The fourth proportional to 28,056.06, 38,717.78 and 15,309.90 is: 21,127.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,056.06 : 38,717.78 = 15,309.90 : x
  2. Step 2: Convert to fraction form
    28,056.06/38,717.78 = 15,309.90/x
  3. Step 3: Cross multiply
    28,056.06x = 38,717.78 × 15,309.90
  4. Step 4: Simplify right side
    28,056.06x = 592,765,263.47
  5. Step 5: Solve for x
    x = 592,765,263.47/28,056.06
  6. Step 6: Final answer
    x = 21,127.89

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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.