Home / 20,695.08-28,557.54-14,421

Finding the Fourth Proportional to 20,695.08, 28,557.54 and 14,421

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Solution

The fourth proportional to 20,695.08, 28,557.54 and 14,421 is: 19,899.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.08 : 28,557.54 = 14,421 : x
  2. Step 2: Convert to fraction form
    20,695.08/28,557.54 = 14,421/x
  3. Step 3: Cross multiply
    20,695.08x = 28,557.54 × 14,421
  4. Step 4: Simplify right side
    20,695.08x = 411,828,284.34
  5. Step 5: Solve for x
    x = 411,828,284.34/20,695.08
  6. Step 6: Final answer
    x = 19,899.82

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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.