Home / 10,864.40-16,296.60-4,287.20

Finding the Fourth Proportional to 10,864.40, 16,296.60 and 4,287.20

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Solution

The fourth proportional to 10,864.40, 16,296.60 and 4,287.20 is: 6,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.40 : 16,296.60 = 4,287.20 : x
  2. Step 2: Convert to fraction form
    10,864.40/16,296.60 = 4,287.20/x
  3. Step 3: Cross multiply
    10,864.40x = 16,296.60 × 4,287.20
  4. Step 4: Simplify right side
    10,864.40x = 69,866,783.52
  5. Step 5: Solve for x
    x = 69,866,783.52/10,864.40
  6. Step 6: Final answer
    x = 6,430.80

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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.