Home / 15,876.60-21,920.40-14,192.64

Finding the Fourth Proportional to 15,876.60, 21,920.40 and 14,192.64

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Solution

The fourth proportional to 15,876.60, 21,920.40 and 14,192.64 is: 19,595.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.60 : 21,920.40 = 14,192.64 : x
  2. Step 2: Convert to fraction form
    15,876.60/21,920.40 = 14,192.64/x
  3. Step 3: Cross multiply
    15,876.60x = 21,920.40 × 14,192.64
  4. Step 4: Simplify right side
    15,876.60x = 311,108,345.86
  5. Step 5: Solve for x
    x = 311,108,345.86/15,876.60
  6. Step 6: Final answer
    x = 19,595.40

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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.