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Finding the Fourth Proportional to 35,545.50, 53,302.70 and 18,901.50

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Solution

The fourth proportional to 35,545.50, 53,302.70 and 18,901.50 is: 28,343.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,545.50 : 53,302.70 = 18,901.50 : x
  2. Step 2: Convert to fraction form
    35,545.50/53,302.70 = 18,901.50/x
  3. Step 3: Cross multiply
    35,545.50x = 53,302.70 × 18,901.50
  4. Step 4: Simplify right side
    35,545.50x = 1,007,500,984.05
  5. Step 5: Solve for x
    x = 1,007,500,984.05/35,545.50
  6. Step 6: Final answer
    x = 28,343.98

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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.