Home / 42,047.12-63,070.92-12,465.20

Finding the Fourth Proportional to 42,047.12, 63,070.92 and 12,465.20

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Solution

The fourth proportional to 42,047.12, 63,070.92 and 12,465.20 is: 18,697.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,047.12 : 63,070.92 = 12,465.20 : x
  2. Step 2: Convert to fraction form
    42,047.12/63,070.92 = 12,465.20/x
  3. Step 3: Cross multiply
    42,047.12x = 63,070.92 × 12,465.20
  4. Step 4: Simplify right side
    42,047.12x = 786,191,316.63
  5. Step 5: Solve for x
    x = 786,191,316.63/42,047.12
  6. Step 6: Final answer
    x = 18,697.87

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1.5x scale

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.