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Finding the Fourth Proportional to 15,614.56, 21,547.02 and 8,900.02

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Solution

The fourth proportional to 15,614.56, 21,547.02 and 8,900.02 is: 12,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,614.56 : 21,547.02 = 8,900.02 : x
  2. Step 2: Convert to fraction form
    15,614.56/21,547.02 = 8,900.02/x
  3. Step 3: Cross multiply
    15,614.56x = 21,547.02 × 8,900.02
  4. Step 4: Simplify right side
    15,614.56x = 191,768,908.94
  5. Step 5: Solve for x
    x = 191,768,908.94/15,614.56
  6. Step 6: Final answer
    x = 12,281.42

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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.