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Finding the Fourth Proportional to 35,486.71, 48,970.01 and 20,368.74

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Solution

The fourth proportional to 35,486.71, 48,970.01 and 20,368.74 is: 28,107.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,486.71 : 48,970.01 = 20,368.74 : x
  2. Step 2: Convert to fraction form
    35,486.71/48,970.01 = 20,368.74/x
  3. Step 3: Cross multiply
    35,486.71x = 48,970.01 × 20,368.74
  4. Step 4: Simplify right side
    35,486.71x = 997,457,401.49
  5. Step 5: Solve for x
    x = 997,457,401.49/35,486.71
  6. Step 6: Final answer
    x = 28,107.91

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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.