Home / 15,280.30-21,095.54-11,688.63

Finding the Fourth Proportional to 15,280.30, 21,095.54 and 11,688.63

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Solution

The fourth proportional to 15,280.30, 21,095.54 and 11,688.63 is: 16,136.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,280.30 : 21,095.54 = 11,688.63 : x
  2. Step 2: Convert to fraction form
    15,280.30/21,095.54 = 11,688.63/x
  3. Step 3: Cross multiply
    15,280.30x = 21,095.54 × 11,688.63
  4. Step 4: Simplify right side
    15,280.30x = 246,577,961.71
  5. Step 5: Solve for x
    x = 246,577,961.71/15,280.30
  6. Step 6: Final answer
    x = 16,136.98

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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.