Home / 12,712.61-19,038.85-6,457.12

Finding the Fourth Proportional to 12,712.61, 19,038.85 and 6,457.12

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Solution

The fourth proportional to 12,712.61, 19,038.85 and 6,457.12 is: 9,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.61 : 19,038.85 = 6,457.12 : x
  2. Step 2: Convert to fraction form
    12,712.61/19,038.85 = 6,457.12/x
  3. Step 3: Cross multiply
    12,712.61x = 19,038.85 × 6,457.12
  4. Step 4: Simplify right side
    12,712.61x = 122,936,075.37
  5. Step 5: Solve for x
    x = 122,936,075.37/12,712.61
  6. Step 6: Final answer
    x = 9,670.40

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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.