Home / 15,742.58-21,730.66-10,439.18

Finding the Fourth Proportional to 15,742.58, 21,730.66 and 10,439.18

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Solution

The fourth proportional to 15,742.58, 21,730.66 and 10,439.18 is: 14,409.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.58 : 21,730.66 = 10,439.18 : x
  2. Step 2: Convert to fraction form
    15,742.58/21,730.66 = 10,439.18/x
  3. Step 3: Cross multiply
    15,742.58x = 21,730.66 × 10,439.18
  4. Step 4: Simplify right side
    15,742.58x = 226,850,271.26
  5. Step 5: Solve for x
    x = 226,850,271.26/15,742.58
  6. Step 6: Final answer
    x = 14,409.98

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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.