Home / 28,248.77-38,983.68-15,501.75

Finding the Fourth Proportional to 28,248.77, 38,983.68 and 15,501.75

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Solution

The fourth proportional to 28,248.77, 38,983.68 and 15,501.75 is: 21,392.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,248.77 : 38,983.68 = 15,501.75 : x
  2. Step 2: Convert to fraction form
    28,248.77/38,983.68 = 15,501.75/x
  3. Step 3: Cross multiply
    28,248.77x = 38,983.68 × 15,501.75
  4. Step 4: Simplify right side
    28,248.77x = 604,315,261.44
  5. Step 5: Solve for x
    x = 604,315,261.44/28,248.77
  6. Step 6: Final answer
    x = 21,392.63

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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.