Home / 20,603.04-28,421.73-13,036.62

Finding the Fourth Proportional to 20,603.04, 28,421.73 and 13,036.62

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Solution

The fourth proportional to 20,603.04, 28,421.73 and 13,036.62 is: 17,983.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.04 : 28,421.73 = 13,036.62 : x
  2. Step 2: Convert to fraction form
    20,603.04/28,421.73 = 13,036.62/x
  3. Step 3: Cross multiply
    20,603.04x = 28,421.73 × 13,036.62
  4. Step 4: Simplify right side
    20,603.04x = 370,523,293.75
  5. Step 5: Solve for x
    x = 370,523,293.75/20,603.04
  6. Step 6: Final answer
    x = 17,983.91

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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.