Home / 15,533.08-21,435.76-8,459.36

Finding the Fourth Proportional to 15,533.08, 21,435.76 and 8,459.36

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Solution

The fourth proportional to 15,533.08, 21,435.76 and 8,459.36 is: 11,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.08 : 21,435.76 = 8,459.36 : x
  2. Step 2: Convert to fraction form
    15,533.08/21,435.76 = 8,459.36/x
  3. Step 3: Cross multiply
    15,533.08x = 21,435.76 × 8,459.36
  4. Step 4: Simplify right side
    15,533.08x = 181,332,810.71
  5. Step 5: Solve for x
    x = 181,332,810.71/15,533.08
  6. Step 6: Final answer
    x = 11,673.98

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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.