Home / 19,929.90-27,503.43-10,977.72

Finding the Fourth Proportional to 19,929.90, 27,503.43 and 10,977.72

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Solution

The fourth proportional to 19,929.90, 27,503.43 and 10,977.72 is: 15,149.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.90 : 27,503.43 = 10,977.72 : x
  2. Step 2: Convert to fraction form
    19,929.90/27,503.43 = 10,977.72/x
  3. Step 3: Cross multiply
    19,929.90x = 27,503.43 × 10,977.72
  4. Step 4: Simplify right side
    19,929.90x = 301,924,953.58
  5. Step 5: Solve for x
    x = 301,924,953.58/19,929.90
  6. Step 6: Final answer
    x = 15,149.35

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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.