Home / 28,128.34-38,816.94-15,553

Finding the Fourth Proportional to 28,128.34, 38,816.94 and 15,553

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Solution

The fourth proportional to 28,128.34, 38,816.94 and 15,553 is: 21,463.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128.34 : 38,816.94 = 15,553 : x
  2. Step 2: Convert to fraction form
    28,128.34/38,816.94 = 15,553/x
  3. Step 3: Cross multiply
    28,128.34x = 38,816.94 × 15,553
  4. Step 4: Simplify right side
    28,128.34x = 603,719,867.82
  5. Step 5: Solve for x
    x = 603,719,867.82/28,128.34
  6. Step 6: Final answer
    x = 21,463.05

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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.