Home / 28,261.06-38,999.98-15,685.81

Finding the Fourth Proportional to 28,261.06, 38,999.98 and 15,685.81

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Solution

The fourth proportional to 28,261.06, 38,999.98 and 15,685.81 is: 21,646.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,261.06 : 38,999.98 = 15,685.81 : x
  2. Step 2: Convert to fraction form
    28,261.06/38,999.98 = 15,685.81/x
  3. Step 3: Cross multiply
    28,261.06x = 38,999.98 × 15,685.81
  4. Step 4: Simplify right side
    28,261.06x = 611,746,276.28
  5. Step 5: Solve for x
    x = 611,746,276.28/28,261.06
  6. Step 6: Final answer
    x = 21,646.26

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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.