Home / 10,284.40-15,430.20-4,445.20

Finding the Fourth Proportional to 10,284.40, 15,430.20 and 4,445.20

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Solution

The fourth proportional to 10,284.40, 15,430.20 and 4,445.20 is: 6,669.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,284.40 : 15,430.20 = 4,445.20 : x
  2. Step 2: Convert to fraction form
    10,284.40/15,430.20 = 4,445.20/x
  3. Step 3: Cross multiply
    10,284.40x = 15,430.20 × 4,445.20
  4. Step 4: Simplify right side
    10,284.40x = 68,590,325.04
  5. Step 5: Solve for x
    x = 68,590,325.04/10,284.40
  6. Step 6: Final answer
    x = 6,669.36

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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.