Home / 13,405.86-18,501.78-8,810.52

Finding the Fourth Proportional to 13,405.86, 18,501.78 and 8,810.52

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Solution

The fourth proportional to 13,405.86, 18,501.78 and 8,810.52 is: 12,159.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.86 : 18,501.78 = 8,810.52 : x
  2. Step 2: Convert to fraction form
    13,405.86/18,501.78 = 8,810.52/x
  3. Step 3: Cross multiply
    13,405.86x = 18,501.78 × 8,810.52
  4. Step 4: Simplify right side
    13,405.86x = 163,010,302.73
  5. Step 5: Solve for x
    x = 163,010,302.73/13,405.86
  6. Step 6: Final answer
    x = 12,159.63

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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.