Home / 12,875.64-17,767.95-7,210.38

Finding the Fourth Proportional to 12,875.64, 17,767.95 and 7,210.38

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Solution

The fourth proportional to 12,875.64, 17,767.95 and 7,210.38 is: 9,950.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,875.64 : 17,767.95 = 7,210.38 : x
  2. Step 2: Convert to fraction form
    12,875.64/17,767.95 = 7,210.38/x
  3. Step 3: Cross multiply
    12,875.64x = 17,767.95 × 7,210.38
  4. Step 4: Simplify right side
    12,875.64x = 128,113,671.32
  5. Step 5: Solve for x
    x = 128,113,671.32/12,875.64
  6. Step 6: Final answer
    x = 9,950.08

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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.