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Finding the Fourth Proportional to 15,726.95, 23,570.99 and 7,931.51

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Solution

The fourth proportional to 15,726.95, 23,570.99 and 7,931.51 is: 11,887.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.95 : 23,570.99 = 7,931.51 : x
  2. Step 2: Convert to fraction form
    15,726.95/23,570.99 = 7,931.51/x
  3. Step 3: Cross multiply
    15,726.95x = 23,570.99 × 7,931.51
  4. Step 4: Simplify right side
    15,726.95x = 186,953,503.24
  5. Step 5: Solve for x
    x = 186,953,503.24/15,726.95
  6. Step 6: Final answer
    x = 11,887.46

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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.