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Finding the Fourth Proportional to 14,655, 20,215.98 and 9,341.40

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Solution

The fourth proportional to 14,655, 20,215.98 and 9,341.40 is: 12,886.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,655 : 20,215.98 = 9,341.40 : x
  2. Step 2: Convert to fraction form
    14,655/20,215.98 = 9,341.40/x
  3. Step 3: Cross multiply
    14,655x = 20,215.98 × 9,341.40
  4. Step 4: Simplify right side
    14,655x = 188,845,555.57
  5. Step 5: Solve for x
    x = 188,845,555.57/14,655
  6. Step 6: Final answer
    x = 12,886.08

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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.