Home / 28,176.15-38,883.15-15,430.17

Finding the Fourth Proportional to 28,176.15, 38,883.15 and 15,430.17

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Solution

The fourth proportional to 28,176.15, 38,883.15 and 15,430.17 is: 21,293.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.15 : 38,883.15 = 15,430.17 : x
  2. Step 2: Convert to fraction form
    28,176.15/38,883.15 = 15,430.17/x
  3. Step 3: Cross multiply
    28,176.15x = 38,883.15 × 15,430.17
  4. Step 4: Simplify right side
    28,176.15x = 599,973,381.64
  5. Step 5: Solve for x
    x = 599,973,381.64/28,176.15
  6. Step 6: Final answer
    x = 21,293.66

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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.