Home / 28,240.32-38,973.60-15,666.24

Finding the Fourth Proportional to 28,240.32, 38,973.60 and 15,666.24

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Solution

The fourth proportional to 28,240.32, 38,973.60 and 15,666.24 is: 21,620.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.32 : 38,973.60 = 15,666.24 : x
  2. Step 2: Convert to fraction form
    28,240.32/38,973.60 = 15,666.24/x
  3. Step 3: Cross multiply
    28,240.32x = 38,973.60 × 15,666.24
  4. Step 4: Simplify right side
    28,240.32x = 610,569,771.26
  5. Step 5: Solve for x
    x = 610,569,771.26/28,240.32
  6. Step 6: Final answer
    x = 21,620.50

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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.