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Finding the Fourth Proportional to 15,653.58, 21,602.61 and 9,364.74

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Solution

The fourth proportional to 15,653.58, 21,602.61 and 9,364.74 is: 12,923.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.58 : 21,602.61 = 9,364.74 : x
  2. Step 2: Convert to fraction form
    15,653.58/21,602.61 = 9,364.74/x
  3. Step 3: Cross multiply
    15,653.58x = 21,602.61 × 9,364.74
  4. Step 4: Simplify right side
    15,653.58x = 202,302,825.97
  5. Step 5: Solve for x
    x = 202,302,825.97/15,653.58
  6. Step 6: Final answer
    x = 12,923.74

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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.