Home / 28,240.56-38,970.45-15,664.50

Finding the Fourth Proportional to 28,240.56, 38,970.45 and 15,664.50

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Solution

The fourth proportional to 28,240.56, 38,970.45 and 15,664.50 is: 21,616.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.56 : 38,970.45 = 15,664.50 : x
  2. Step 2: Convert to fraction form
    28,240.56/38,970.45 = 15,664.50/x
  3. Step 3: Cross multiply
    28,240.56x = 38,970.45 × 15,664.50
  4. Step 4: Simplify right side
    28,240.56x = 610,452,614.03
  5. Step 5: Solve for x
    x = 610,452,614.03/28,240.56
  6. Step 6: Final answer
    x = 21,616.17

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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.