Home / 13,790.34-19,008.54-9,312.66

Finding the Fourth Proportional to 13,790.34, 19,008.54 and 9,312.66

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Solution

The fourth proportional to 13,790.34, 19,008.54 and 9,312.66 is: 12,836.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.34 : 19,008.54 = 9,312.66 : x
  2. Step 2: Convert to fraction form
    13,790.34/19,008.54 = 9,312.66/x
  3. Step 3: Cross multiply
    13,790.34x = 19,008.54 × 9,312.66
  4. Step 4: Simplify right side
    13,790.34x = 177,020,070.12
  5. Step 5: Solve for x
    x = 177,020,070.12/13,790.34
  6. Step 6: Final answer
    x = 12,836.53

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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.