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Finding the Fourth Proportional to 35,708.90, 53,526.90 and 20,910.20

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Solution

The fourth proportional to 35,708.90, 53,526.90 and 20,910.20 is: 31,343.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,708.90 : 53,526.90 = 20,910.20 : x
  2. Step 2: Convert to fraction form
    35,708.90/53,526.90 = 20,910.20/x
  3. Step 3: Cross multiply
    35,708.90x = 53,526.90 × 20,910.20
  4. Step 4: Simplify right side
    35,708.90x = 1,119,258,184.38
  5. Step 5: Solve for x
    x = 1,119,258,184.38/35,708.90
  6. Step 6: Final answer
    x = 31,343.96

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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.