Home / 15,555.32-21,484.37-11,325.40

Finding the Fourth Proportional to 15,555.32, 21,484.37 and 11,325.40

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Solution

The fourth proportional to 15,555.32, 21,484.37 and 11,325.40 is: 15,642.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.32 : 21,484.37 = 11,325.40 : x
  2. Step 2: Convert to fraction form
    15,555.32/21,484.37 = 11,325.40/x
  3. Step 3: Cross multiply
    15,555.32x = 21,484.37 × 11,325.40
  4. Step 4: Simplify right side
    15,555.32x = 243,318,973.66
  5. Step 5: Solve for x
    x = 243,318,973.66/15,555.32
  6. Step 6: Final answer
    x = 15,642.18

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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.