Home / 15,555.94-21,474.86-10,779.50

Finding the Fourth Proportional to 15,555.94, 21,474.86 and 10,779.50

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Solution

The fourth proportional to 15,555.94, 21,474.86 and 10,779.50 is: 14,881.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.94 : 21,474.86 = 10,779.50 : x
  2. Step 2: Convert to fraction form
    15,555.94/21,474.86 = 10,779.50/x
  3. Step 3: Cross multiply
    15,555.94x = 21,474.86 × 10,779.50
  4. Step 4: Simplify right side
    15,555.94x = 231,488,253.16
  5. Step 5: Solve for x
    x = 231,488,253.16/15,555.94
  6. Step 6: Final answer
    x = 14,881.02

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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.