Home / 28,216.77-38,938.88-15,470.66

Finding the Fourth Proportional to 28,216.77, 38,938.88 and 15,470.66

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Solution

The fourth proportional to 28,216.77, 38,938.88 and 15,470.66 is: 21,349.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.77 : 38,938.88 = 15,470.66 : x
  2. Step 2: Convert to fraction form
    28,216.77/38,938.88 = 15,470.66/x
  3. Step 3: Cross multiply
    28,216.77x = 38,938.88 × 15,470.66
  4. Step 4: Simplify right side
    28,216.77x = 602,409,901.21
  5. Step 5: Solve for x
    x = 602,409,901.21/28,216.77
  6. Step 6: Final answer
    x = 21,349.36

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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.