Home / 30,444.14-42,045.87-20,909.16

Finding the Fourth Proportional to 30,444.14, 42,045.87 and 20,909.16

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Solution

The fourth proportional to 30,444.14, 42,045.87 and 20,909.16 is: 28,877.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,444.14 : 42,045.87 = 20,909.16 : x
  2. Step 2: Convert to fraction form
    30,444.14/42,045.87 = 20,909.16/x
  3. Step 3: Cross multiply
    30,444.14x = 42,045.87 × 20,909.16
  4. Step 4: Simplify right side
    30,444.14x = 879,143,823.17
  5. Step 5: Solve for x
    x = 879,143,823.17/30,444.14
  6. Step 6: Final answer
    x = 28,877.28

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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.