Home / 22,715.08-31,347.17-12,643.63

Finding the Fourth Proportional to 22,715.08, 31,347.17 and 12,643.63

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Solution

The fourth proportional to 22,715.08, 31,347.17 and 12,643.63 is: 17,448.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,715.08 : 31,347.17 = 12,643.63 : x
  2. Step 2: Convert to fraction form
    22,715.08/31,347.17 = 12,643.63/x
  3. Step 3: Cross multiply
    22,715.08x = 31,347.17 × 12,643.63
  4. Step 4: Simplify right side
    22,715.08x = 396,341,955.81
  5. Step 5: Solve for x
    x = 396,341,955.81/22,715.08
  6. Step 6: Final answer
    x = 17,448.41

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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.