Home / 15,609.48-21,541.02-8,535.84

Finding the Fourth Proportional to 15,609.48, 21,541.02 and 8,535.84

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Solution

The fourth proportional to 15,609.48, 21,541.02 and 8,535.84 is: 11,779.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.48 : 21,541.02 = 8,535.84 : x
  2. Step 2: Convert to fraction form
    15,609.48/21,541.02 = 8,535.84/x
  3. Step 3: Cross multiply
    15,609.48x = 21,541.02 × 8,535.84
  4. Step 4: Simplify right side
    15,609.48x = 183,870,700.16
  5. Step 5: Solve for x
    x = 183,870,700.16/15,609.48
  6. Step 6: Final answer
    x = 11,779.43

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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.