Home / 15,345.63-21,177.27-8,972.46

Finding the Fourth Proportional to 15,345.63, 21,177.27 and 8,972.46

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Solution

The fourth proportional to 15,345.63, 21,177.27 and 8,972.46 is: 12,382.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,345.63 : 21,177.27 = 8,972.46 : x
  2. Step 2: Convert to fraction form
    15,345.63/21,177.27 = 8,972.46/x
  3. Step 3: Cross multiply
    15,345.63x = 21,177.27 × 8,972.46
  4. Step 4: Simplify right side
    15,345.63x = 190,012,207.98
  5. Step 5: Solve for x
    x = 190,012,207.98/15,345.63
  6. Step 6: Final answer
    x = 12,382.17

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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.