Home / 42,140.18-63,210.57-10,550.78

Finding the Fourth Proportional to 42,140.18, 63,210.57 and 10,550.78

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Solution

The fourth proportional to 42,140.18, 63,210.57 and 10,550.78 is: 15,826.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,140.18 : 63,210.57 = 10,550.78 : x
  2. Step 2: Convert to fraction form
    42,140.18/63,210.57 = 10,550.78/x
  3. Step 3: Cross multiply
    42,140.18x = 63,210.57 × 10,550.78
  4. Step 4: Simplify right side
    42,140.18x = 666,920,817.74
  5. Step 5: Solve for x
    x = 666,920,817.74/42,140.18
  6. Step 6: Final answer
    x = 15,826.25

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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.