Home / 15,527.96-21,417.02-9,857.78

Finding the Fourth Proportional to 15,527.96, 21,417.02 and 9,857.78

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Solution

The fourth proportional to 15,527.96, 21,417.02 and 9,857.78 is: 13,596.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.96 : 21,417.02 = 9,857.78 : x
  2. Step 2: Convert to fraction form
    15,527.96/21,417.02 = 9,857.78/x
  3. Step 3: Cross multiply
    15,527.96x = 21,417.02 × 9,857.78
  4. Step 4: Simplify right side
    15,527.96x = 211,124,115.04
  5. Step 5: Solve for x
    x = 211,124,115.04/15,527.96
  6. Step 6: Final answer
    x = 13,596.39

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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.