Home / 15,543.19-21,443.18-10,830.21

Finding the Fourth Proportional to 15,543.19, 21,443.18 and 10,830.21

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Solution

The fourth proportional to 15,543.19, 21,443.18 and 10,830.21 is: 14,941.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.19 : 21,443.18 = 10,830.21 : x
  2. Step 2: Convert to fraction form
    15,543.19/21,443.18 = 10,830.21/x
  3. Step 3: Cross multiply
    15,543.19x = 21,443.18 × 10,830.21
  4. Step 4: Simplify right side
    15,543.19x = 232,234,142.47
  5. Step 5: Solve for x
    x = 232,234,142.47/15,543.19
  6. Step 6: Final answer
    x = 14,941.21

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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.