Home / 10,903.12-15,041.64-8,535.76

Finding the Fourth Proportional to 10,903.12, 15,041.64 and 8,535.76

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Solution

The fourth proportional to 10,903.12, 15,041.64 and 8,535.76 is: 11,775.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,903.12 : 15,041.64 = 8,535.76 : x
  2. Step 2: Convert to fraction form
    10,903.12/15,041.64 = 8,535.76/x
  3. Step 3: Cross multiply
    10,903.12x = 15,041.64 × 8,535.76
  4. Step 4: Simplify right side
    10,903.12x = 128,391,829.05
  5. Step 5: Solve for x
    x = 128,391,829.05/10,903.12
  6. Step 6: Final answer
    x = 11,775.70

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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.