Home / 20,977.84-28,950.24-11,547.28

Finding the Fourth Proportional to 20,977.84, 28,950.24 and 11,547.28

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Solution

The fourth proportional to 20,977.84, 28,950.24 and 11,547.28 is: 15,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.84 : 28,950.24 = 11,547.28 : x
  2. Step 2: Convert to fraction form
    20,977.84/28,950.24 = 11,547.28/x
  3. Step 3: Cross multiply
    20,977.84x = 28,950.24 × 11,547.28
  4. Step 4: Simplify right side
    20,977.84x = 334,296,527.35
  5. Step 5: Solve for x
    x = 334,296,527.35/20,977.84
  6. Step 6: Final answer
    x = 15,935.70

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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.