Home / 38,574.36-57,870.72-12,279.06

Finding the Fourth Proportional to 38,574.36, 57,870.72 and 12,279.06

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Solution

The fourth proportional to 38,574.36, 57,870.72 and 12,279.06 is: 18,421.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,574.36 : 57,870.72 = 12,279.06 : x
  2. Step 2: Convert to fraction form
    38,574.36/57,870.72 = 12,279.06/x
  3. Step 3: Cross multiply
    38,574.36x = 57,870.72 × 12,279.06
  4. Step 4: Simplify right side
    38,574.36x = 710,598,043.12
  5. Step 5: Solve for x
    x = 710,598,043.12/38,574.36
  6. Step 6: Final answer
    x = 18,421.51

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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.