Home / 14,707.52-20,312.90-11,390.45

Finding the Fourth Proportional to 14,707.52, 20,312.90 and 11,390.45

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Solution

The fourth proportional to 14,707.52, 20,312.90 and 11,390.45 is: 15,731.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,707.52 : 20,312.90 = 11,390.45 : x
  2. Step 2: Convert to fraction form
    14,707.52/20,312.90 = 11,390.45/x
  3. Step 3: Cross multiply
    14,707.52x = 20,312.90 × 11,390.45
  4. Step 4: Simplify right side
    14,707.52x = 231,373,127.39
  5. Step 5: Solve for x
    x = 231,373,127.39/14,707.52
  6. Step 6: Final answer
    x = 15,731.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.