Home / 42,985.04-64,454.88-13,397.36

Finding the Fourth Proportional to 42,985.04, 64,454.88 and 13,397.36

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Solution

The fourth proportional to 42,985.04, 64,454.88 and 13,397.36 is: 20,088.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,985.04 : 64,454.88 = 13,397.36 : x
  2. Step 2: Convert to fraction form
    42,985.04/64,454.88 = 13,397.36/x
  3. Step 3: Cross multiply
    42,985.04x = 64,454.88 × 13,397.36
  4. Step 4: Simplify right side
    42,985.04x = 863,525,231.12
  5. Step 5: Solve for x
    x = 863,525,231.12/42,985.04
  6. Step 6: Final answer
    x = 20,088.97

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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.