Home / 13,586.51-18,740.76-9,815.22

Finding the Fourth Proportional to 13,586.51, 18,740.76 and 9,815.22

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Solution

The fourth proportional to 13,586.51, 18,740.76 and 9,815.22 is: 13,538.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.51 : 18,740.76 = 9,815.22 : x
  2. Step 2: Convert to fraction form
    13,586.51/18,740.76 = 9,815.22/x
  3. Step 3: Cross multiply
    13,586.51x = 18,740.76 × 9,815.22
  4. Step 4: Simplify right side
    13,586.51x = 183,944,657.83
  5. Step 5: Solve for x
    x = 183,944,657.83/13,586.51
  6. Step 6: Final answer
    x = 13,538.77

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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.