Home / 13,931.65-20,973.49-12,706.93

Finding the Fourth Proportional to 13,931.65, 20,973.49 and 12,706.93

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Solution

The fourth proportional to 13,931.65, 20,973.49 and 12,706.93 is: 19,129.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.65 : 20,973.49 = 12,706.93 : x
  2. Step 2: Convert to fraction form
    13,931.65/20,973.49 = 12,706.93/x
  3. Step 3: Cross multiply
    13,931.65x = 20,973.49 × 12,706.93
  4. Step 4: Simplify right side
    13,931.65x = 266,508,669.29
  5. Step 5: Solve for x
    x = 266,508,669.29/13,931.65
  6. Step 6: Final answer
    x = 19,129.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.