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Finding the Fourth Proportional to 21,703.98, 32,547.69 and 7,661.39

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Solution

The fourth proportional to 21,703.98, 32,547.69 and 7,661.39 is: 11,489.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,703.98 : 32,547.69 = 7,661.39 : x
  2. Step 2: Convert to fraction form
    21,703.98/32,547.69 = 7,661.39/x
  3. Step 3: Cross multiply
    21,703.98x = 32,547.69 × 7,661.39
  4. Step 4: Simplify right side
    21,703.98x = 249,360,383.95
  5. Step 5: Solve for x
    x = 249,360,383.95/21,703.98
  6. Step 6: Final answer
    x = 11,489.15

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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.