Home / 13,316.40-19,848.24-13,219.20

Finding the Fourth Proportional to 13,316.40, 19,848.24 and 13,219.20

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Solution

The fourth proportional to 13,316.40, 19,848.24 and 13,219.20 is: 19,703.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.40 : 19,848.24 = 13,219.20 : x
  2. Step 2: Convert to fraction form
    13,316.40/19,848.24 = 13,219.20/x
  3. Step 3: Cross multiply
    13,316.40x = 19,848.24 × 13,219.20
  4. Step 4: Simplify right side
    13,316.40x = 262,377,854.21
  5. Step 5: Solve for x
    x = 262,377,854.21/13,316.40
  6. Step 6: Final answer
    x = 19,703.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.