Home / 22,518.12-31,075.20-12,446.40

Finding the Fourth Proportional to 22,518.12, 31,075.20 and 12,446.40

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Solution

The fourth proportional to 22,518.12, 31,075.20 and 12,446.40 is: 17,176.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,518.12 : 31,075.20 = 12,446.40 : x
  2. Step 2: Convert to fraction form
    22,518.12/31,075.20 = 12,446.40/x
  3. Step 3: Cross multiply
    22,518.12x = 31,075.20 × 12,446.40
  4. Step 4: Simplify right side
    22,518.12x = 386,774,369.28
  5. Step 5: Solve for x
    x = 386,774,369.28/22,518.12
  6. Step 6: Final answer
    x = 17,176.14

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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.