Home / 10,509.40-14,511.42-7,159.24

Finding the Fourth Proportional to 10,509.40, 14,511.42 and 7,159.24

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Solution

The fourth proportional to 10,509.40, 14,511.42 and 7,159.24 is: 9,885.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,509.40 : 14,511.42 = 7,159.24 : x
  2. Step 2: Convert to fraction form
    10,509.40/14,511.42 = 7,159.24/x
  3. Step 3: Cross multiply
    10,509.40x = 14,511.42 × 7,159.24
  4. Step 4: Simplify right side
    10,509.40x = 103,890,738.52
  5. Step 5: Solve for x
    x = 103,890,738.52/10,509.40
  6. Step 6: Final answer
    x = 9,885.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.