Home / 42,896.95-64,345.10-12,911.06

Finding the Fourth Proportional to 42,896.95, 64,345.10 and 12,911.06

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Solution

The fourth proportional to 42,896.95, 64,345.10 and 12,911.06 is: 19,366.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,896.95 : 64,345.10 = 12,911.06 : x
  2. Step 2: Convert to fraction form
    42,896.95/64,345.10 = 12,911.06/x
  3. Step 3: Cross multiply
    42,896.95x = 64,345.10 × 12,911.06
  4. Step 4: Simplify right side
    42,896.95x = 830,763,289.81
  5. Step 5: Solve for x
    x = 830,763,289.81/42,896.95
  6. Step 6: Final answer
    x = 19,366.49

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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.