Home / 28,159.86-42,226.14-11,513.28

Finding the Fourth Proportional to 28,159.86, 42,226.14 and 11,513.28

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Solution

The fourth proportional to 28,159.86, 42,226.14 and 11,513.28 is: 17,264.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159.86 : 42,226.14 = 11,513.28 : x
  2. Step 2: Convert to fraction form
    28,159.86/42,226.14 = 11,513.28/x
  3. Step 3: Cross multiply
    28,159.86x = 42,226.14 × 11,513.28
  4. Step 4: Simplify right side
    28,159.86x = 486,161,373.14
  5. Step 5: Solve for x
    x = 486,161,373.14/28,159.86
  6. Step 6: Final answer
    x = 17,264.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.