Home / 42,570.60-63,855.72-12,988.35

Finding the Fourth Proportional to 42,570.60, 63,855.72 and 12,988.35

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Solution

The fourth proportional to 42,570.60, 63,855.72 and 12,988.35 is: 19,482.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,570.60 : 63,855.72 = 12,988.35 : x
  2. Step 2: Convert to fraction form
    42,570.60/63,855.72 = 12,988.35/x
  3. Step 3: Cross multiply
    42,570.60x = 63,855.72 × 12,988.35
  4. Step 4: Simplify right side
    42,570.60x = 829,380,440.86
  5. Step 5: Solve for x
    x = 829,380,440.86/42,570.60
  6. Step 6: Final answer
    x = 19,482.47

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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.