Home / 28,032.45-38,684.59-15,457.20

Finding the Fourth Proportional to 28,032.45, 38,684.59 and 15,457.20

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Solution

The fourth proportional to 28,032.45, 38,684.59 and 15,457.20 is: 21,330.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,032.45 : 38,684.59 = 15,457.20 : x
  2. Step 2: Convert to fraction form
    28,032.45/38,684.59 = 15,457.20/x
  3. Step 3: Cross multiply
    28,032.45x = 38,684.59 × 15,457.20
  4. Step 4: Simplify right side
    28,032.45x = 597,955,444.55
  5. Step 5: Solve for x
    x = 597,955,444.55/28,032.45
  6. Step 6: Final answer
    x = 21,330.83

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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.