Home / 42,973.10-64,459.45-13,390.95

Finding the Fourth Proportional to 42,973.10, 64,459.45 and 13,390.95

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Solution

The fourth proportional to 42,973.10, 64,459.45 and 13,390.95 is: 20,086.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,973.10 : 64,459.45 = 13,390.95 : x
  2. Step 2: Convert to fraction form
    42,973.10/64,459.45 = 13,390.95/x
  3. Step 3: Cross multiply
    42,973.10x = 64,459.45 × 13,390.95
  4. Step 4: Simplify right side
    42,973.10x = 863,173,205.02
  5. Step 5: Solve for x
    x = 863,173,205.02/42,973.10
  6. Step 6: Final answer
    x = 20,086.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.