Home / 30,937.08-42,666.84-20,852.28

Finding the Fourth Proportional to 30,937.08, 42,666.84 and 20,852.28

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Solution

The fourth proportional to 30,937.08, 42,666.84 and 20,852.28 is: 28,758.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,937.08 : 42,666.84 = 20,852.28 : x
  2. Step 2: Convert to fraction form
    30,937.08/42,666.84 = 20,852.28/x
  3. Step 3: Cross multiply
    30,937.08x = 42,666.84 × 20,852.28
  4. Step 4: Simplify right side
    30,937.08x = 889,700,894.40
  5. Step 5: Solve for x
    x = 889,700,894.40/30,937.08
  6. Step 6: Final answer
    x = 28,758.40

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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.