Home / 10,215.60-15,328.80-4,669.80

Finding the Fourth Proportional to 10,215.60, 15,328.80 and 4,669.80

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Solution

The fourth proportional to 10,215.60, 15,328.80 and 4,669.80 is: 7,007.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215.60 : 15,328.80 = 4,669.80 : x
  2. Step 2: Convert to fraction form
    10,215.60/15,328.80 = 4,669.80/x
  3. Step 3: Cross multiply
    10,215.60x = 15,328.80 × 4,669.80
  4. Step 4: Simplify right side
    10,215.60x = 71,582,430.24
  5. Step 5: Solve for x
    x = 71,582,430.24/10,215.60
  6. Step 6: Final answer
    x = 7,007.17

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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.