Home / 13,279.71-19,931.88-6,710.51

Finding the Fourth Proportional to 13,279.71, 19,931.88 and 6,710.51

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Solution

The fourth proportional to 13,279.71, 19,931.88 and 6,710.51 is: 10,071.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.71 : 19,931.88 = 6,710.51 : x
  2. Step 2: Convert to fraction form
    13,279.71/19,931.88 = 6,710.51/x
  3. Step 3: Cross multiply
    13,279.71x = 19,931.88 × 6,710.51
  4. Step 4: Simplify right side
    13,279.71x = 133,752,946.85
  5. Step 5: Solve for x
    x = 133,752,946.85/13,279.71
  6. Step 6: Final answer
    x = 10,071.98

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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.