Home / 10,359.20-15,538.80-7,054.40

Finding the Fourth Proportional to 10,359.20, 15,538.80 and 7,054.40

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Solution

The fourth proportional to 10,359.20, 15,538.80 and 7,054.40 is: 10,581.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,359.20 : 15,538.80 = 7,054.40 : x
  2. Step 2: Convert to fraction form
    10,359.20/15,538.80 = 7,054.40/x
  3. Step 3: Cross multiply
    10,359.20x = 15,538.80 × 7,054.40
  4. Step 4: Simplify right side
    10,359.20x = 109,616,910.72
  5. Step 5: Solve for x
    x = 109,616,910.72/10,359.20
  6. Step 6: Final answer
    x = 10,581.60

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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.