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Finding the Fourth Proportional to 14,459.54, 21,689.31 and 7,547.54

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Solution

The fourth proportional to 14,459.54, 21,689.31 and 7,547.54 is: 11,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,459.54 : 21,689.31 = 7,547.54 : x
  2. Step 2: Convert to fraction form
    14,459.54/21,689.31 = 7,547.54/x
  3. Step 3: Cross multiply
    14,459.54x = 21,689.31 × 7,547.54
  4. Step 4: Simplify right side
    14,459.54x = 163,700,934.80
  5. Step 5: Solve for x
    x = 163,700,934.80/14,459.54
  6. Step 6: Final answer
    x = 11,321.31

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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.