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Finding the Fourth Proportional to 58,000.44, 86,989.69 and 20,559

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Solution

The fourth proportional to 58,000.44, 86,989.69 and 20,559 is: 30,834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,000.44 : 86,989.69 = 20,559 : x
  2. Step 2: Convert to fraction form
    58,000.44/86,989.69 = 20,559/x
  3. Step 3: Cross multiply
    58,000.44x = 86,989.69 × 20,559
  4. Step 4: Simplify right side
    58,000.44x = 1,788,421,036.71
  5. Step 5: Solve for x
    x = 1,788,421,036.71/58,000.44
  6. Step 6: Final answer
    x = 30,834.61

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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.