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Finding the Fourth Proportional to 13,032.98, 17,980.65 and 8,559.21

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Solution

The fourth proportional to 13,032.98, 17,980.65 and 8,559.21 is: 11,808.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,032.98 : 17,980.65 = 8,559.21 : x
  2. Step 2: Convert to fraction form
    13,032.98/17,980.65 = 8,559.21/x
  3. Step 3: Cross multiply
    13,032.98x = 17,980.65 × 8,559.21
  4. Step 4: Simplify right side
    13,032.98x = 153,900,159.29
  5. Step 5: Solve for x
    x = 153,900,159.29/13,032.98
  6. Step 6: Final answer
    x = 11,808.52

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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.