Home / 15,386.51-21,234.55-8,672.77

Finding the Fourth Proportional to 15,386.51, 21,234.55 and 8,672.77

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Solution

The fourth proportional to 15,386.51, 21,234.55 and 8,672.77 is: 11,969.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.51 : 21,234.55 = 8,672.77 : x
  2. Step 2: Convert to fraction form
    15,386.51/21,234.55 = 8,672.77/x
  3. Step 3: Cross multiply
    15,386.51x = 21,234.55 × 8,672.77
  4. Step 4: Simplify right side
    15,386.51x = 184,162,368.20
  5. Step 5: Solve for x
    x = 184,162,368.20/15,386.51
  6. Step 6: Final answer
    x = 11,969.08

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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.