Home / 13,211.51-19,823.76-5,313.71

Finding the Fourth Proportional to 13,211.51, 19,823.76 and 5,313.71

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Solution

The fourth proportional to 13,211.51, 19,823.76 and 5,313.71 is: 7,973.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.51 : 19,823.76 = 5,313.71 : x
  2. Step 2: Convert to fraction form
    13,211.51/19,823.76 = 5,313.71/x
  3. Step 3: Cross multiply
    13,211.51x = 19,823.76 × 5,313.71
  4. Step 4: Simplify right side
    13,211.51x = 105,337,711.75
  5. Step 5: Solve for x
    x = 105,337,711.75/13,211.51
  6. Step 6: Final answer
    x = 7,973.18

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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.