Home / 10,320.78-14,254.40-6,957.80

Finding the Fourth Proportional to 10,320.78, 14,254.40 and 6,957.80

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Solution

The fourth proportional to 10,320.78, 14,254.40 and 6,957.80 is: 9,609.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,320.78 : 14,254.40 = 6,957.80 : x
  2. Step 2: Convert to fraction form
    10,320.78/14,254.40 = 6,957.80/x
  3. Step 3: Cross multiply
    10,320.78x = 14,254.40 × 6,957.80
  4. Step 4: Simplify right side
    10,320.78x = 99,179,264.32
  5. Step 5: Solve for x
    x = 99,179,264.32/10,320.78
  6. Step 6: Final answer
    x = 9,609.67

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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.