Home / 15,490.02-21,376.18-8,776.93

Finding the Fourth Proportional to 15,490.02, 21,376.18 and 8,776.93

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Solution

The fourth proportional to 15,490.02, 21,376.18 and 8,776.93 is: 12,112.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.02 : 21,376.18 = 8,776.93 : x
  2. Step 2: Convert to fraction form
    15,490.02/21,376.18 = 8,776.93/x
  3. Step 3: Cross multiply
    15,490.02x = 21,376.18 × 8,776.93
  4. Step 4: Simplify right side
    15,490.02x = 187,617,200.94
  5. Step 5: Solve for x
    x = 187,617,200.94/15,490.02
  6. Step 6: Final answer
    x = 12,112.13

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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.