Home / 58,439.20-87,658.80-16,890.40

Finding the Fourth Proportional to 58,439.20, 87,658.80 and 16,890.40

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Solution

The fourth proportional to 58,439.20, 87,658.80 and 16,890.40 is: 25,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,439.20 : 87,658.80 = 16,890.40 : x
  2. Step 2: Convert to fraction form
    58,439.20/87,658.80 = 16,890.40/x
  3. Step 3: Cross multiply
    58,439.20x = 87,658.80 × 16,890.40
  4. Step 4: Simplify right side
    58,439.20x = 1,480,592,195.52
  5. Step 5: Solve for x
    x = 1,480,592,195.52/58,439.20
  6. Step 6: Final answer
    x = 25,335.60

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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.