Home / 15,510.96-21,405.12-8,437.36

Finding the Fourth Proportional to 15,510.96, 21,405.12 and 8,437.36

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Solution

The fourth proportional to 15,510.96, 21,405.12 and 8,437.36 is: 11,643.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.96 : 21,405.12 = 8,437.36 : x
  2. Step 2: Convert to fraction form
    15,510.96/21,405.12 = 8,437.36/x
  3. Step 3: Cross multiply
    15,510.96x = 21,405.12 × 8,437.36
  4. Step 4: Simplify right side
    15,510.96x = 180,602,703.28
  5. Step 5: Solve for x
    x = 180,602,703.28/15,510.96
  6. Step 6: Final answer
    x = 11,643.55

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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.