Home / 13,421.12-20,123.73-4,058.30

Finding the Fourth Proportional to 13,421.12, 20,123.73 and 4,058.30

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Solution

The fourth proportional to 13,421.12, 20,123.73 and 4,058.30 is: 6,085.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.12 : 20,123.73 = 4,058.30 : x
  2. Step 2: Convert to fraction form
    13,421.12/20,123.73 = 4,058.30/x
  3. Step 3: Cross multiply
    13,421.12x = 20,123.73 × 4,058.30
  4. Step 4: Simplify right side
    13,421.12x = 81,668,133.46
  5. Step 5: Solve for x
    x = 81,668,133.46/13,421.12
  6. Step 6: Final answer
    x = 6,085.05

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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.