Home / 19,315.13-26,655.28-10,931.63

Finding the Fourth Proportional to 19,315.13, 26,655.28 and 10,931.63

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Solution

The fourth proportional to 19,315.13, 26,655.28 and 10,931.63 is: 15,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,315.13 : 26,655.28 = 10,931.63 : x
  2. Step 2: Convert to fraction form
    19,315.13/26,655.28 = 10,931.63/x
  3. Step 3: Cross multiply
    19,315.13x = 26,655.28 × 10,931.63
  4. Step 4: Simplify right side
    19,315.13x = 291,385,497.90
  5. Step 5: Solve for x
    x = 291,385,497.90/19,315.13
  6. Step 6: Final answer
    x = 15,085.87

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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.