Home / 15,506.34-21,389.47-9,831.07

Finding the Fourth Proportional to 15,506.34, 21,389.47 and 9,831.07

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Solution

The fourth proportional to 15,506.34, 21,389.47 and 9,831.07 is: 13,561.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.34 : 21,389.47 = 9,831.07 : x
  2. Step 2: Convert to fraction form
    15,506.34/21,389.47 = 9,831.07/x
  3. Step 3: Cross multiply
    15,506.34x = 21,389.47 × 9,831.07
  4. Step 4: Simplify right side
    15,506.34x = 210,281,378.99
  5. Step 5: Solve for x
    x = 210,281,378.99/15,506.34
  6. Step 6: Final answer
    x = 13,561.00

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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.