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Finding the Fourth Proportional to 35,312.80, 52,983.64 and 18,668.40

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Solution

The fourth proportional to 35,312.80, 52,983.64 and 18,668.40 is: 28,010.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,312.80 : 52,983.64 = 18,668.40 : x
  2. Step 2: Convert to fraction form
    35,312.80/52,983.64 = 18,668.40/x
  3. Step 3: Cross multiply
    35,312.80x = 52,983.64 × 18,668.40
  4. Step 4: Simplify right side
    35,312.80x = 989,119,784.98
  5. Step 5: Solve for x
    x = 989,119,784.98/35,312.80
  6. Step 6: Final answer
    x = 28,010.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.