Home / 14,346.72-21,421.89-12,856.32

Finding the Fourth Proportional to 14,346.72, 21,421.89 and 12,856.32

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Solution

The fourth proportional to 14,346.72, 21,421.89 and 12,856.32 is: 19,196.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,346.72 : 21,421.89 = 12,856.32 : x
  2. Step 2: Convert to fraction form
    14,346.72/21,421.89 = 12,856.32/x
  3. Step 3: Cross multiply
    14,346.72x = 21,421.89 × 12,856.32
  4. Step 4: Simplify right side
    14,346.72x = 275,406,672.84
  5. Step 5: Solve for x
    x = 275,406,672.84/14,346.72
  6. Step 6: Final answer
    x = 19,196.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.