Home / 13,283.30-18,326.58-8,570.72

Finding the Fourth Proportional to 13,283.30, 18,326.58 and 8,570.72

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Solution

The fourth proportional to 13,283.30, 18,326.58 and 8,570.72 is: 11,824.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,283.30 : 18,326.58 = 8,570.72 : x
  2. Step 2: Convert to fraction form
    13,283.30/18,326.58 = 8,570.72/x
  3. Step 3: Cross multiply
    13,283.30x = 18,326.58 × 8,570.72
  4. Step 4: Simplify right side
    13,283.30x = 157,071,985.74
  5. Step 5: Solve for x
    x = 157,071,985.74/13,283.30
  6. Step 6: Final answer
    x = 11,824.77

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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.