Home / 10,355.63-14,290.77-5,639.91

Finding the Fourth Proportional to 10,355.63, 14,290.77 and 5,639.91

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Solution

The fourth proportional to 10,355.63, 14,290.77 and 5,639.91 is: 7,783.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.63 : 14,290.77 = 5,639.91 : x
  2. Step 2: Convert to fraction form
    10,355.63/14,290.77 = 5,639.91/x
  3. Step 3: Cross multiply
    10,355.63x = 14,290.77 × 5,639.91
  4. Step 4: Simplify right side
    10,355.63x = 80,598,688.71
  5. Step 5: Solve for x
    x = 80,598,688.71/10,355.63
  6. Step 6: Final answer
    x = 7,783.08

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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.