Home / 23,031.72-31,788.12-14,421.90

Finding the Fourth Proportional to 23,031.72, 31,788.12 and 14,421.90

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Solution

The fourth proportional to 23,031.72, 31,788.12 and 14,421.90 is: 19,904.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,031.72 : 31,788.12 = 14,421.90 : x
  2. Step 2: Convert to fraction form
    23,031.72/31,788.12 = 14,421.90/x
  3. Step 3: Cross multiply
    23,031.72x = 31,788.12 × 14,421.90
  4. Step 4: Simplify right side
    23,031.72x = 458,445,041.75
  5. Step 5: Solve for x
    x = 458,445,041.75/23,031.72
  6. Step 6: Final answer
    x = 19,904.94

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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.