Home / 19,830.85-27,352.29-12,750.51

Finding the Fourth Proportional to 19,830.85, 27,352.29 and 12,750.51

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Solution

The fourth proportional to 19,830.85, 27,352.29 and 12,750.51 is: 17,586.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,830.85 : 27,352.29 = 12,750.51 : x
  2. Step 2: Convert to fraction form
    19,830.85/27,352.29 = 12,750.51/x
  3. Step 3: Cross multiply
    19,830.85x = 27,352.29 × 12,750.51
  4. Step 4: Simplify right side
    19,830.85x = 348,755,647.17
  5. Step 5: Solve for x
    x = 348,755,647.17/19,830.85
  6. Step 6: Final answer
    x = 17,586.52

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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.