Home / 19,871.52-27,423.48-10,920.08

Finding the Fourth Proportional to 19,871.52, 27,423.48 and 10,920.08

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Solution

The fourth proportional to 19,871.52, 27,423.48 and 10,920.08 is: 15,070.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.52 : 27,423.48 = 10,920.08 : x
  2. Step 2: Convert to fraction form
    19,871.52/27,423.48 = 10,920.08/x
  3. Step 3: Cross multiply
    19,871.52x = 27,423.48 × 10,920.08
  4. Step 4: Simplify right side
    19,871.52x = 299,466,595.48
  5. Step 5: Solve for x
    x = 299,466,595.48/19,871.52
  6. Step 6: Final answer
    x = 15,070.14

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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.