Home / 23,129.08-31,918.15-12,518.69

Finding the Fourth Proportional to 23,129.08, 31,918.15 and 12,518.69

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Solution

The fourth proportional to 23,129.08, 31,918.15 and 12,518.69 is: 17,275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.08 : 31,918.15 = 12,518.69 : x
  2. Step 2: Convert to fraction form
    23,129.08/31,918.15 = 12,518.69/x
  3. Step 3: Cross multiply
    23,129.08x = 31,918.15 × 12,518.69
  4. Step 4: Simplify right side
    23,129.08x = 399,573,281.28
  5. Step 5: Solve for x
    x = 399,573,281.28/23,129.08
  6. Step 6: Final answer
    x = 17,275.80

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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.